I haven't heard your choices so I can't comment on them.
I use an REL strata 3 with MG12's in the front, and MMGW's for rear. Maybe more of a music sub rather than a HT sub, sealed w/ a 10 inch driver. One thing I like is the dual inputs. Speaker level for the music side, the MG12's are run full range, and the sub fills in under. Low level LFE input for HT where the pre/pro crosses over the MG12's at 80hz. separate volume controls for each input. You can cross it over very low with a steep slope, great for maggies.
Good luck, Ryan