Yes, I agree. I have 2 different wants, recording rides and providing GPS maps for navigation. I already have a small 4.3" gps but find the screen to be way too small for my old far sighted eyes and the interface sucks, a tablets mutitouch interface would be better. The battery on my GPS dies after about 1 hour, it was intended to use in a car with a DC source of power. The last time I used it I had to look at it, turn it off and then dig it out again and turn it back on, navigate to the route and do it all over again. I will be the first to admit that I am a real dork with directions. While "real" biking GPS's may be the "best" solution the price is just beyond what I want to spend, a tablet for less than $200 may fill the bill.

rdtompki's comment about the readability in sunlight is one thing I hadn't considered and may put the kibosh on the idea. I know there are times I have to find shade or hunch over my present GPS to see the screen.

I may just keep up with my present method, pre-study the route online using ridewithgps, download it to my GPS and use my small cheap bike computer / GPS waypoint tracker to record the ride. If it's a new or extended rout I will back it up with a paper map I printed out from Google Maps too.