That's a difficult question to answer! The Space is great with more emphasis on 'effects', it's very versatile. I've got a H90 so its a bit redundant for me. The BAM is great because it focuses more on 'day-to-day' reverbs. Very easy to do things like the Abbey Road trick. If you're looking for a hardware reverb that can be more of a studio workhorse without getting into silly money, the BAM or the Boss RV500 is the way to go. Whereas the Space is like the Big Sky, its more for more out-there uses of reverb.
