I've owned both, and side-by-side I'd choose the SoundQubed any day of the week, but at the end of the day it's personal preference and both will probably do the job just fine.
I'd see if you can test both somewhere, preferably side-by-side.
Now for my setup (proud prius owner) I found some rather high quality boards of mahogany in the woods (limited rotting, just painted over it) and used those to make a box for my dual FI SSD15's. Mind you, the prius has an incredible amount of space to put this baby. So I tossed the setup in the...