I find that the NES version all around blows. It's way too difficult, you can only save at inns, you lose your save if you don't do the whole "hold reset, then press power" thing (and sometimes you lose your save even if you DO do that), it's extremely slow, and, loathe as I am to say it, I find it hard to look at the graphics after I've seen the new entries. As far as what version I enjoy most, though, I'm not sure. The PS1, PSP, and GBA versions all have their strong points and weak points. But the PSP version is the one I go back to the most simply because it's so easy to start up and play, and you don't really have to worry about save points and all that trout.