Just a quick note to say that the SampleTank 4 Acoustic Guitars sound great to my ear! Look like some of them are not even from the "4" but rather the "3" version of ST.
I can appreciate just how hard it must have been to capture these sounds, since acoustic instruments played by hand (e.g. not a hammer action, etc.) would be especially tricky to get an even, consistent feel across the keybed...
Kudos to the IKM sound engineers for their excellent recording and editing of these instruments. Very inspiring...