This might help.
https://forum.audiogon.com/discussions/rel-strata-iii-vs-rel-q201e
Note that they prefer the Strada over the designed for HT Q series? I had a Strada lll and it was decent. I now use S series which are better again. You might consider using two T series subs instead. T5x, T7x, T9x etc. Depending on room size