I run the CbB version, always update it. But maintain 8.53 - SPlat on my machines.
So far, all things are going very well. I haven`t the need to go use the previous stuff.
CbB was able to handle 7 instances of Melodyne (studio) without bouncing down any of them.
I was able to edit all those tracks, side by side without a single crash.
All on a modest QUAD core Q9600 PC with 8 gig of memory.
I was impressed. The core program is very solid.
My must have VSTs from the previous versions are very important to what I do,
so I still need/want to keep my legacy VSTs.