Well if you go SE then an 861v9 (in less than a year) makes sense with the new DSP chips and higher SQ (presumably).

DSP8000SE is always worth it IMHO as fronts. DSP7200SE is great but big brother is something else.

Now, as surrounds/sides I've had DSP5000, DSP5200, DSP5200SE, DSP7200.2, DSP7200SE. And yes it's crazy with surround speakers as DSP7200SE, but when you have all at the SE level it's like something snaps into gear once more.

My closest speakers are my back speakers and therefore I did appreciate trying out the DSP5200SE and going for DSP7200SE instead. I have them firing at each other behind my back near wall. It actually works well.

The surroundmixes have equal quality of sound front and back so it helps the illusion to have the same sounds performed at very close to equal SQ as front and surround in back. Trifield benefits from better rears as well IMHO. But those DSP8000SE/DSP7200SEHC front speakers are the priority IMHO.

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.