Garmin StreetPilot® i2 GPS Receiver

First off - map data is stored in a microSD card (aka transflash). With a very entry level GPS this is unavoidable. It comes with a 128 that can handle about 5 states though I bought it knowing I would also buy a 512 card which fits entire East & West coasts though not much in the middle thereafter. If you can't handle that you'll have to either go higher end or get more microSD cards (recommend going higher end and buying a model with all map data stored internally in the unit). I ended up buying the 512 microSD with an adapter so I can use the included 128mb micro-SD as a normal SD in my digital camera, which I needed anyway.

Data transfer from your computer to the unit (via usb) can be VERY slow, but, I know that so I bought a larger card so the probability of me needed to do that is lessened. (note: I bought it during the black friday week from Wal-Mart for $200...great deal!)

Navigation works great. Detour function if you run into construction or an accident. Have used it many times while driving to find the nearest dunkin donuts. Have used it on work travel. I left without any directions and easily found my hotel via the stored data. You can review the turns prior to actually going anywhere...when you click on a specific turn it then shows you the map of that area which can be very useful.

Everything through the click-wheel. Its actually still easy to input an address to drive to. As your filling the address it sorts the available streets using the characters you type. When your close enough you can stop clicking letter-by-letter and just click on the street name in the sorted list.

I call it 'one thumb' operation. When its attached and I'm driving I can't click the wheel with my pointer finger as the wheel moves a little changing my selection. Annoying but I can deal as I can just remove it from the attachment very easily.

Another annoyance is when I change the map scale. I tend to zoom out but when I approach a turn it zooms into the turn. This feature I like. But, when I'm done with that turn it doesn't zoom back out to the previous view size.

Love the size. I can remove it to input/search and also to store away if I feel iffy about the area. I bought a camera bag to store it in along with the power cord (if necessary) and the usb transfer cord (though I don't need that to be portable anymore).

The 'approximate arrival time' is great and works really really well. The 'miles to next turn' is very accurate. It also reminds you about 1mile up to a turn that it is coming up. Note: you have to start moving before it can verbally tell you turn right/left especially in parking lots.

GPS works really well even in 'bad' weather. Worked without any loss of signal during recent major Northeast snow storm. Have not used the WAAS function (a for of differential GPS via FAA geostationary satellites, basically it just makes GPS more accurate, my Garmin eTrex can get accuracy of 8ft with WAAS) as I don't think its really that necessary for car navigation.

The Black & White isn't a big deal to deal with. There is some enhancement to having a color screen (i3) but I don't think the extra price justifies it, at least not for me.

When on external power, and the power is removed, is goes into auto-shut off (if there are batteries in it) countdown, but, not all cigarette lighters/power adapters lose power when the vehicle is off. So simply disconnect either from the unit or from the power source. Inevitable.

This is probably the cheapest automotive GPS available (and I bought it used on eBay, so even cheaper) but, in my view, while it may lack some bells and whistles, it has the same basic software, NavTec, and accomplishes the same tasks the bigger, more expensive GPS appliances do and is a much better value. It comes with enough memory to download several large nearby states and additional memory is nominal. You spend a few minutes setting it up using your PC and then entering your destination before you take off. It will take you there, cross-country or to an unfamiliar neighborhood in the next town. It might not help you find Elvis but it will get you to Graceland without a hitch. A black and white screen, very clear and readable, and a pleasant voice giving directions as you drive (my wife and I both remarked that the voice was nicer than in her brother-in-law's $2,000 built in unit). We are very pleased.