I can answer your question with quite a bit of experience on this front:
1) I have an all Revel setup that has evolved over time.
2) When I was initially setting up my system, I had contemplated building around Focals, so I had gotten a great deal on Focal dipole surrounds.
3) I then purchased Revel M22 fronts with an C32 center and mated those with the Focals.
4) On their own the speakers were amazing, but there was a difference in timbre with any true surround effects.
5) I then sold the Focals and got the S30s. Perfection. Absolute perfection. I preferred them in monopole mode vs dipole mode.
6) When I moved, I was unable to use free-standing surrounds and had to go all architectural. I now use IC15s for my side surrounds and IC6T2s for my rears.
In your setup, the best choices would be as follows:
1) If you are looking at monitor/direct radiating speakers: Depending on your budget and goals, you can opt to get Ultima Gems for the side surrounds. Those are obviously the perfect match. Optionally, get either M20s or M22s for the side surrounds and put those monitors on stands. You can also look to get any of the new Performa3 models.
2) If you are looking for dipoles, then get the S30s or the matching Ultima Embrace. I would then look at the Concertas for the rears in a 7.1 setup just based on cost or go with S30s for the rears as well. I wouldn't suggest going with the Ultima embrace for the rears unless you had the liquid cash freely available. The S30s are being cleaned out of final inventory and you can get them brand new with warranty as low as $499 each in white only. That's a steal for $2,000/pair speakers that will mate perfectly with your setup.
Of all the options, I personally prefer the S30s. They have dipole/monopole switching and you can even trigger that switching based on source. They can be either wall or ceiling mounted. If you cannot wall or ceiling mount, then go with the monitors.