In the following I will try to list what each offers and my comments.
 

Features & Options	StreetPilot	GPS III	GPS II
Maps - major roads	Yes - North and South America	Yes -  North and South America	No
Maps- minor roads	Optional	No	No
Points of Interest	Optional, lists stuff local to your location like gas, food,   stores, lodging and more.	No	No
Speed	Yes - fast updates, but no 10th MPH reading above 9.9 mph.   Both GPS II & III do.	Yes  (& 10th reading)	Yes  (& 10th reading)
Units of Measure	Miles, Feet  Kilometer, Meter,  No Nautical speed, this is a land base GPS unit.Okay	Miles, Feet  Kilometer, Meter  Nautical	Miles, Feet  Kilometer, Meter  Nautical
Odometer	Yes (but it's really a trip Odometer IMHO. When resetting   mileage, it will also reset your "trip"  time)	Yes	No
Trip Odometer	No - sure missed this.	Yes	Yes
Trip Timers	Yes, but reset with Odometer	Yes	Yes
Max. Speed	Yes	Yes	Yes
Power/Battery	Level bar / power plug icon  (Liked the voltage readings a lot better)	Voltage & Bar Graph	Bar Graph
Screen Back light	Very Bright Orange, must have about 16 adjustable levels. Great even in bright sun light.	Green, 3 levels.	Green, 3 levels
Displays ETE  Est. Time Enroute	NO	Yes	Yes
Display ETA  Est. Time of ARV.	Yes	Yes	Yes
Sun Rise & Set	Yes, but only in setup screen - Dumb place to have it	Yes	Yes
Map Datum's	Only NMEA 0183  So much for UTM	Many	Many
DGPS Option	Yes	Yes	Yes
GPS Coord. Displays	Only as N HH, Min.Dec. W HH, MM.DDD	Many formats	Many Formats
Run/Stop time	Yes	No	No
Driving Avg.	Yes	Yes	Yes
Max. Alarm Speed	Yes - life saver!	No	No
Beeper	Yes! Love it!	No	No
Find Function	Yes, find streets & more	No	No
Routing	Yes, but it's not automatic. Routes follow the roads  that you mark. Then displays your route as you travel.	WP to WP	WP to WP
Auto Zoom	Yes	No	No
AutoNight Display	Yes	No	No
Alarm Clock	Yes	Yes, but no beep	No (?)
`

 

Garmin Street Pilot: (Changes I would like see in future versions).
Click on any of the photos for a larger picture.

	Add the speed to the large map. It has the lat. & long & elevation  info. and just what good Lat. Long Data is while you are driving? Can you really use it while you are driving?  I know I don't, not saying it shouldn't be there.  But I think they need to add the speed and time to the screen which is more important to me while traveling then the lat. long coordinates.
	In order to get the Sun Rise and Sun Set information, I have to go to the System Setup Screen - Dumb place to have to view your sun rise & set data, it's not like you are going to set the Sun Rise & Sun Set time, so why is it in the System Setup  screen ?
	Add a Data Screen that will let you display the fields you like when you are not using the map.  I don't think much of the screen that looks like your car's dash, too limited on data.  Looks nice at first, but the function of the display is wasted.
	Right now the speed it only displays in whole numbers once you are above 9.9 mph, I would like to see the 10th mph added like in the GPS II & III. I find it great while watching your speed. Clock - only diplays hours and minutes while on the custom map screen and you do not have it point to some wavepoint.
	Now that I have a wavepoint to goto, your speed and time of day are gone.  But you still know your coordinates..Like I said before who uses that while driving?  I would like to see my speed at least.
	This part is great while traveling with in your MetroGuide area.  If you are hungy, just press the find button and you will get a list like this.
	Select the one you like, and you have the address and phone number right there!  I love this while I am traving around!
	Then have it point the way to it!  Man this place here, El Gallo Mexican Restauant, is great, you will not leave hungry from this place, they fill your plate with good food!
	Here I am viewing the distants from my current location to my pointer. (don't look at the arrows, I was stopped while taking these photos, so the arrow goes all over the place went you are not moving)
	Now, because I am still viewing the distant to the marker and have not moved the marker since I last moved it, it is still telling me that I am 0.5 miles from my marker, when really I am just about right on top of it. I wish it would keep updating your distant. Check this this out, it will tell you the aprox. address you are pointing to.

 

• When viewing the Map & Nav Info. I wish you could select what is displayed in the fields like you can with the GPS III. The GPS III has great selection of data that you can pick from, so that you can Customize your map & data just how you like it. So of the GPS III options are: Altitude, Speed, Trip Timer Sun Rise, Sun Se, Trip odom, Avg. Speed, Distant  to next point, Time to Next point, Time of Day, Pointer, Bat. Voltage, User Timer, Track, Bearing, Distant to Destination, ETA to Destination, Time to Destination.  Something like 23 field options in all.
• Lat. & Long format, I wish theywould give the user the option to select the format.  I don't like just hh.mm.ddd format, what about UTM, HH.MM.SS just to name a few?  Not all maps or point of ref.,  use the same format. If some one give you thier coordinates, you better hope they are in the same format as the StreetPilot.

 
I have tried talking to the Tech department about the Street Pilot, but it was more like they did not care to hear what I had to say. And told me that with the limited power, that is all it can do. Well I think some changes for the better can be made.. When I asked about the battery voltage being displayed like on the GPS III, they asked "why would you want that?" Sorry, am I the only fool who wished to see the battery voltage? I get the feeling that the tech dept. guy doesn't care to know what the consumer like or dislikes.

Garmin #
Website http://www.garmin.com/
Voice 913-397-8200
Fax # 913-397-8282