For me I'm just going to go all out for my next theater build. Not sure if I'll call it "end game" theater because i'm sure I'll upgrade things over time, but I want to have certain pieces of my theater right away.
So current list of things I would like at the beginning.
Processor: Trinnov Alt 32-24 channel or StormAudio 24 CH.
Speakers: This one's tough because I like so many different brands. Right now, I have RBH, Perlisten, Focal, JTR/RTJ and I think I'm going to throw in JBL. I'm liking those M2's mixed with Synthesis for sides/surrounds and ATMOS.
AMP: I'm really sold on ATI amps. Class D or A/B is fine with me. If budget allowed, I'd throw McIntosh or Bryston amps in the mix.
Projector: Right now, I have the JVC NZ9 at the top of my list. Maybe by the time I'm ready to build they will have a projector that has 4-5k lumens available. I love JVC projectors. Will be interesting to see what Sony brings to the table later this year, but I'm sure I will stick with JVC. End game projector if someone gifted me $150k would be the Christie Griffyn AS projector. Haha
Screen: Stewart Filmscreen or Seymour Screens. 170"-200" Not sure yet. If I get the dimensions that I think I want, I will go with the biggest scope screen I can get. Hopefully that's the 200".
Accoustics: Have no idea. So many acoustic companies out there. GIK seems to be a popular company. So might check them out.
Other: MadEnvy Extreme, Kaleidescape, Zappiti and NAS system, Panamorph lens. These are future adds. Don't think they'll be something I can get right away.
I hope to save quite a bit of funds by building the theater myself. Well, with the help of some family members. But using the right channels and working with dealers, that should allow me to be somewhat "end game" right away for my next theater build.
As the saying goes "buy once, cry once." haha