The market is pretty solid when it comes to good quality hand held digital recorders. The one absolute requirement would be 24bit bit depth, which most all of the newer recorders provide. One of the best features of the Sony that you're looking at that I've read is that it has incredible run time on a set of batteries. The quality provided by all of these handheld recorders is quite amazing. The sound you can expect ranges from acceptable when using on-board mics to amazing when using good quality out-board gear upstream of the recorder. I'd say to try to forecast the type of rig you'll be building around your recorder, then concentrate on any specific features you'll need to support that (for example, will you need a digital input, which the Sony provides). In the end though, I think almost all of the recorders in this genre will have most of the same feature set. I think that you'll be quite happy with whatever you end up with, as long as it's not the low end.