I've had two, a super featurefied Lowrance iWay 500C and now Garmin's cheapest wide screen Nuvi model.
The old one was $600+ or so when I got it and the new one just cost me about $130 or so. The performance of the new one is amazing. It recalculates and calculates the directions an order of magnitude faster than the old one did. It also weighs a few ounces where the old one had an actual hard drive in it and a giant heat sink on the back and weighed a pound or two.
For basic driving, all the bells and whistles were never used so I decided the base model would be fine. The only thing that Garmin has as an upsell feature that annoyed the hell out of me is alphabetizing the 'favorites' list if you can believe it. I didn't know this wasn't already in this one or I would have bought the next one up.
I resent that Garmin has alphabetical sorting of saved lists as a 'feature', it's a no-brainer and something I would assume any list in any software like that would just do.
Outside of that, I really like it.
The most often used feature is if I'm just out for a ride wandering around and finally get sick of driving...just set it to 'home' and it gets me out of wherever I
am in the shortest route back.