i have both 32 bit and 64 bit shortcuts with the latest BIAB update. as far as synths go, i have both forte and the TTS1 although my version is the 32 bit edirol hypercanvas by Roland which has identical sounds.

Peter Gannon in a reply to one of my posts said that PG music balance their midi styles on the Roland sound set and that it is superior to the 64 bit soft synth bundled with BIAB 2019. I also think it's superior to the forte sounds.

so if you use the 64 bit BIAB and download the TTS1 as Peter Gannon suggests for free with Cakewalk you'll actually get the best midi sounds optimised for BIAB