Hello, looking for advice.

Which surround speaker (HTM-200 SE or CBM-170 SE) is recommend, given that they are presently the same price from Ascend?

Sound quality when playing Hi-Res discrete surround music is of paramount importance. Situations where the instrument and vocals may be arriving from the rear. Examples include SACD's from Jeff Beck, Billy Cobham, The Yes Album (blu-ray w/Steven Wilson mix), etc.

My present 5.1 system has L/R RAAL Towers, Sierra-2 Center, and dual Rythmik F8 subs. Surround speakers are cheapo Pioneer (Andrew Jones) BS-22's - these will be replaced.

Mounting and size are not of concern, both the Ascends will work. Rcvr is a Yamaha RX2050.

Thanks,
Steve