Hard to get much better than the Paradigms you have. B&W is a standard choice, or if you're looking for something completely different, Martin Logan. But if I were in your shoes, I would just buy more Paradigms to fill out the set. If you want better low-frequency extension in your fronts, buy a pair of Monitor 11's for the fronts and use the 7's for the surrounds.
In the end, room response characteristics will overwhelm any colorations that come from the speakers. What really differentiates speakers are low-end frequency response, power handling, and efficiency. (I.e., how low they will go, and how loud they will go without distorting.) As long as they are competently designed and built, with high-quality components, there is little difference between full-range tower-style speakers. Sure, they may sound different -- they will all have their characteristic peaks and troughs, and a few timbral characteristics based on driver choices -- but assuming that they test at +/- 2dB from 54Hz to 20000Hz in an anechoic chamber (the specs for the Monitor 7's as listed on Paradigm's site), you will be extremely lucky, after processing and correction, to get +/- 6dB in that same range in an actual real-life room with furniture, floors, walls, ceilings, etc., and where you are actually sitting a realistic distance from the speakers. So don't sweat it too much 🙂