operator=invaluable to me now, not the cleanest sound but you can get a million different tones from it and a lot of them are big and warm, and as mentioned in the kicks thread it can do some damage percussion wise.

tension=i've actually gotten this to sound pretty convincing when running it thru guitar amp emulators and it can do some fun stuff if abused.

electric=meh, not really that amazing. there are much better rhodes and wurlitzer emulators out there. look into lounge lizard maybe.

analog=as mentioned not capable of delivering huge bass but i've found it pretty effective for creating classic stab type sounds (good for detroit and dub techno. it sits somewhere inbetween an oldschool analog emulation and a digital synth. it definitely has its strong sides and is actually pretty versatile once you dig into it but i could do without it if i had to.

sampler=very cool. i love the fm oscillator and the morph filter. i also like how the modulation section is pretty flexible.

as far as stuff like session drums, drum machines and latin percussion i wouldnt bother. there are better alternatives out there like addictive drums, BFD drums, the d16 plugs and the goldbaby samplepacks.