Yeah,
for ub's, again, you'll rule out any toontrack for the time being.
Now, BFD works really well in UB, and it's really the best for sitting in the "Mix" I guess what I mean by that is if you listen to it on it's own.......it may not sound as good as the dkfh stuff.........but........usually (and this has been echo'ed by many many many) in a mix, it sound fantastic! But, it's a monster......it required patience, and cpu and ram, and time...........ok, that's not the "popular" answer.......but it is a great program.
Now, reason's refill is just sick. But again, there is the cpu issue cause it's rewire.......so......I'll try to make sense of this.......it's the logic stuff/cpu PLUS the reason rewire stuff! It's pretty taxing......
Someone mentioned RMX. This is a really good choice. Oh, it takes some time to get the hang of the power.......but it's nicer on the cpu in most instances. I use almost all the time now since it's .....well.....easier! And yes, backbeat and retrofunk are the ones to start off with. Although, for 25 bucks, if you do RMX, get the katrina relief pack.......it's worth allot more than that. Just remember, RMX is rex file based, it's not for everyone:)