I use, and have used the Original Rapture for many years, Love it, still use it even though I have many newer and arguably better synths and stuff, it is a old fav. (
Also use and have used Dim Pro and Z3TA 2 for many years, love them also)
Rapture Pro however, stinks to high heaven, it is a buggy piece of crap, always has been from the start, don't let the fanboi's tell you any different, just check the threads on these very forums, not to mention other 3rd party forums for the real truth, it still has major issues, unless of course you don't consider silent patches (factory content) and huge volume differences between patches that actually do work a problem. No it's not like every second patch or anything, but it is enough for those of us who actually do come across these issues, not to mention the pathetic condition it was released in. Yes it is usable . . . . Now, I just don't use it out of principal, and will never purchase another Cakewalk Synth, the amount of better top quality synths out there which work correctly as they should from day one, why would you even bother with a company with Cakewalks record in the Synth area, where they are well known for releasing synths then basically abandoning them while still having major, glaring bugs (Z3TA 2 for example) even though they continue to actively sell them, again for proof, look no further than threads on this very forum, let alone other 3rd party forums which can be far more aggressive, and might I say honest.