IMO, the biggest problem with Bose is the midrange. Because the satellites have trouble with lower-midrange frequencies say anything below 200hz, the acoustimass has to pick up the slack, but it's not exceptionally good above say 80-100 hz. You end up with a frequency "gap" between the two. I find this glaringly obvious listening to 2 channel music (i.e. a CD).
Another problem I have with Bose is the lack of specs online for their speakers. They don't publish sensitivity, frequency response, crossover range, etc. This always makes me highly suspicious. Most other reputable speaker companies (Ascend, AV123, Axiom, Polk SVS, Mirage etc.) publish their speakers specs. All Bose publishes is their size and weight.
I would highly suggest you audition some other brands if possible before buying them. If after you have and you still like Bose the best, by all means buy them. Good luck whatever you decide to do.