I have a Tascam DP-01FX and a Fostex MR16 that I use to record ideas from time to time. I haven't really used them much since last fall. I did bring the Tascam back out of storage last week for that reason, though. It's very easy to use, and easy to remember where all the functions are.
The Fostex isn't quite as intuitive, though I thought the sound quality seemed pretty good. I really like it, but don't know whether to sell it or not. Since I stopped using it primarily and shifted to the computer, I've collected some preamps and microphones that I would like to try with it now. Maybe that will happen this weekend.