I was highly impressed with the audio and video samples on the Ample Guitar site and considered buying it, so this is interesting.
As any of you who know me are aware, I am a huge fan of RealGuitar (Musiclab) because it is simple to use (once you get a couple of concepts down) and the system load is very light. If you know how to do it, RealGuitar will strum any chord you can think up, plus it is a good solo instrument.
I really want Ample to work, though, because it has a different and really good sound.
One possible issue: if this is one of those systems that requires you to populate a chart with a list of chords you plan to use in a song, that's OK, but that is way less flexible (for me) than just putting the chords in MIDI as I need them. I do understand, however, that for someone who does not read music (or does not like to), maybe a chord table is a good thing.