Mario,
Perhaps NOW is a perfect time to get Session stuff, before they decide to do one of those "sub only" traps smile
Session guitars, bases and ukulele, had only minor bug improvements since initial release. They are, what they are. Maybe not the best sampled guitars, but definitely in upper 10%, even now after a decade of first release from the series. When on sale, most are $50, or you can pick them up "used" (license transfer) for same. VST3 should last (be supported) at least another decade or so, judging by previous versions, even if NI goes bye bye.

The whole NI Session suit is amazing companion to BIAB. especially now, when there is BIAB option to "protect" certain note range on Chord track for key switches. Then you export MIDI chord track to DAW and it will perform same way as you programmed it in BIAB.

shlind, another one of my favorites is Silk2 by Ujam. Nylon string, phrase based guitar. Syncs very well to BIAB. As with session guitars, phrases will follow your BIAB chords. You can pick it up for $20 on sale.

--------------------------------
Mario,
Is Soundprop phrase based (as session or ujam) or just sampled guitars? Will it follow (recognize) Midi chord track?