You are going to lose some depth in the bass for sure without the powered subs.
In that price range I think used Revel 208s or new 206 are worth looking at. Kef R5 or used R7 would be another one. I prefer the revels over the Kefs for a more integrated natural sound.
B&W lower models are under-performers imo. I have owned the 703s a long time ago and would not recommend them.
