With regards to file formats, REX, flac etc, wasn't what that Bill dude from cakewalk saying, that you can use any of the file types that Sonar can handle, and Drum replacer can't natively by just dragging them into Sonar and they will be automatically converted to wav ? Then you can use them in Drum Replacer ? Forgive me if this was obvious, but I just got the feeling of a little misunderstanding (probably on my part, just skimming through on my phone, not really ideal)
Anyway, Sonar Platinum is pretty cool, and the forums, well, they are interesting, perusing through the threads, it seems it's not an entirely happy place, which is fine, certainly some 'characters' for want of a better word :)