I just did got done doing an A/B comparison of the Fluance SX 5.0 system to the Ascend CBM-170 SE.
In all fairness the Fluance SX are 5 year old and cost me 270 shipped back then, but there is no comparison whatsoever. The Ascend beat the Fluance in every way.
The Fluance have more accented high end but muddled bass and almost non-existent mid. No sound stage to speak of....
I know there are lots of great reviews...but I would never have bought the Fluance if I could have heard them against the Ascends...the Ascends cost 350 for a pair so not apples to apples.
If you can't swing something better than Fluance...save a little more...it is worth it.
I do have a set I would let go cheap though