Sub Suggestions

A single Aerial sw 12 sub could be all you need . Two is better of course as each could be used for seperating bass for each channel but the unit has a switch for summing the input. It also has a switch for movie and music and you can optimize the sub for both. Other than that , the SW 12 is a fantastic sub and would mate nicely with your speakers. Beautiful , near indestructible and harmonically rich ; music reproduction for this unit has few peers. For theatre , it is very good to excellent.

velodyne spl 1200r's sound pretty amazing!

I think the Rockets have a parametric EQ on board also, yes? Not sure on that, but think so. That would help as well

I want something smaller than the Aerial SW12 and I don't want to spend that much given that it would only be used for HT and sit there 98% of the time doing nothing. I like 2 channel music most, everyone else wants surround sound. But know that this mode will be rarely used for the most part.

The Rockets do have parametric EQ on board, which is very helpful when setting them up. If music is most important to you, I think you will love it. Very compact also.