I hope your health continues to improve!
There's a lot to be said for Magnepans, however, in my limited experience, subs make all the difference. I'm running 3.7i's with a pair of Rythmik F12 subs w/ XLR3 "plate amplifier" and the Rythmiks were fairly easy to integrate.
The difference was not subtle. I went from being able to hear the bass to actually feeling it. It added a texture that is hard for me to put into words. The bass really isn't really obvious, however, until I turn it off -- if that makes any sense at all.
I added the subs one at a time about six weeks apart. The first sub was impressive, adding a second was an even bigger improvement and not just by double.
Of course, that's with my ears, my room, my system. ymmv.