If your crossing over at 80, then i wouldnt go with the 170s as they are alot bigger then the 200s and shouldnt be wall mounted, idk where you plan on putting them though. The 200s have lots of clearity with low end sound. I agree with dan that they are designed to match, i even remember ascend claiming this as well. I play alot of music, and when i switch from two channel to multi channel, the sound is seamless, they blend in perfectly unlike some orher speakers i tried. the htms to my ears sound just like the 340s. Very nuetral and accurate, with clearity. Your avr will let you cross over down to 50 as well but whats the point. My sub cannot be localized at 80 unlike the denon/klipsch combo i had. Didnt ascend say they dont have any more of those wall mounts, regardless of it being on the website?