the 2610 is probably the best unit available. They are in the process of discontuning the 2620. The 1 GB card will do about 1/2 the united states and probably will be the only one that you really need but the 2 GB will cover most of the US but will miss some of it. Make sure to register the unit with garmin and MAKE SURE to go to
www.garmin.com and get the latest updates. I believe they are on 4.3 now. you can update you garmin quickly and easily on their site. The updates are free. They also use the city navigator. Garmin told me that they are always 1 year behind and not to update except about every three years or so. They also provide updates for the computer program. You can register 2 units to use the same city navigator software so get with a friend and split the cost of about 150 bucks. The 2610 is NOT always accurate but pretty close and will get you there. They are fun to operate and sit on the dash. The cheapest place I found to buy id GPS CITY.com. My son-in-law just got a new one for about 600 dollars brand new. drop me a line at
[email protected] and I'll gladly give you a couple of details on use. Thanks for allowing me to participate in this great site Motordoctor