Introduction:
I purchased a Garmin StreetPilot i2 GPS for in-car navigation. It's one of the cheapest ways to get navigation in your car. Garmin's entry level automotive model has a small black and white backlit display (1.7� W x 1.3� H, 240 x 176 pixels, high-contrast monochrome FSTN with backlight.) This unit is tiny compared to other GPSs. I love the size. It's easily pocketable if I need to carry it from car to car. It's powered by two AA batteries or 12V car outlet.

Mounting:
I'm using the included suction cup windshield mount. It's pretty strong and hold the unit well. I find that the screen size, although one of the smallest in it's class, is adequate.

Storage:
The i2 comes with 128MB Transflash (Micro SD) of removable memory. Once the software is installed onto my Windows PC, I was able to copy the maps over to the GPS using the provided USB cable. The software allows you to pick which states/cities you want copied over. I was able to copy over PA, NJ, NY, DE, MD, VA onto the 128MB of memory. I don't expect to be traveling too far from these states.

Input Method:
The unit is opreated by a Power button, a Back button, and a Scrolling Wheel which is pressable (similar to the scroll wheel found on most modern computer mice.) Pretty much all of the inputting is done with the scroll wheel and scroll wheel button. The back button allows you to go back to the previous screen, the main screen, or back to the selections if you are spelling something. Unlike most of Garmin's other higher end GPS's, there's no touch screen. I found the scroll wheel input speed decent enough for me. The i2 keeps track of your recent searches, allows you to save favorites, and specify a "Home" address. You also can use the search feature to search via a directory (shopping, food, gas stations, recreation, etc) instead of an address.

Navigation:
The navigation provides accurate and reasonable routes to get me from A to B. It hasn't gotten me lost yet. It did try to tell me to make a left turn at an intersection marked with a "No Left Turns" sign. GPSs offer guidance. You still ultimately need to know where you are going and have a general idea of how to get there. You should also use the i2's Review Turns feature. It shows you what streets you will be turning on and how many miles you will be on it.

Also See:
Other models in the StreetPilot i series include the StreetPilot i3 (adds color screen instead of black and white) and the StreetPilot i5 (adds color screen instead of black and white and comes with an built-in internal flash memory preloaded with detailed maps for North America.) I played with the i5 briefly in the store and found that the internal flash memory must be much quicker than the transflash in the i2. The searching and operation of the unit is noticably faster on the i5. Is it worth the premium over the i2/i3? Probably not. The price of the i5 is very close to the price of Garmin's other units that are bigger and have touch screens.

Conclusion:
Strong Buy. It's a great piece of equipment for the price you are paying. It can be had for around $200 if you look around. Buying from a repuatable retailer gives you Garmin's warranty and support. If you buy from an online auction such as eBay, you don't get that.