Fruity 5 now as a sort of battery, it's called fpc, u can load samples into pads and load a midi sequence 2 trigger it :)
Fruity it's so much more complex that battery, batery is juat a sampler/ synth, so it only triggers samples (or yer own warped versions of it). Fruity is a full blown sequencer suite. Fruity can trigger samples and do some very tasty synthesis on each sample plus it can do so much more, icluding using battery with in it! but if u need 2 trigger samples from a midi keyboard or pads I would say Battery takes the prize.
I wouldn't stress 2 much, just work a little bit with fruity and check if it fits for yer working methods, then u can even try battery with in it and check if it pleases ya...
Z