I have a pair of Sttafs - I'm not sure if these are the ones you say you're familiar with. The bass is quite good for most music - probably 85% of what I listen to. But for some Rock music I find the lack of extreme deep bass a little wanting. I've hooked a little Paradigm sub (PS800) up to them and it solves the problem - but I'm looking for a good sub to pair with them.
For reference, I a-b'd them extensively with Vanderstein 2's when I bought them and I thought the bass was pretty comparable, but prefer the imaging and mids in the Totems. My other reference point is my old Infinitys that are flat to 22 hz. For that 15% of music I was refering to I prefer the Infinitys even though they lack the imaging/mid of the Totems. But for the other 85% the Totems are sweet.