I got tired of reading forums, flipped a coin and ordered HSU's. I inquired about sending them back so I could try the Ascends, but I would eat the initial shipping ($80) and the return shipping ($76). Initially I was very satisfied, but then I did the wrong thing and kept reading forums and began to second guess my decision. I would love to hear the Ascends to compare directly, but not for $156.
If I had to do it again I would order a A CMT-340 SE Center and a pair of CBM-170 SE's. Then If I really like them I would order another set of 170's for the surrounds, or if I wanted louder I would order a pair of 340's for the L/R and move the 170's to surround duty.
Chances are, I would then question if I should have gone with HSUs.
In the end, order a set and enjoy them. After all that is what is important. Convincing somebody on a forum that your speaker is the best choice for them is not what is important. You will notice most knowledgeable people on here say, "Hey, I liked this speaker set a lot, but your results may vary"