Klipsch are hit or miss and it's personal preference. I liked the sound of mine before but they were fatiguing to my ears and I ended up going to Ascend Acoustics and now Power Sound Audio. Some of the main recommendations will be Ascend Acoustics 340 and 170, Power Sound Audio, Chane, RSL, HSU, HTD Level 3, and a few I'm forgetting. If you're talking $5k for the main speakers I would consider the PSA stuff for sure for movies. For subs you're looking at ported 15's or 18's of Rythmik, HSU, Power Sound Audio, SVS, Monolith, and again a couple I'm forgetting.
Sony XBR-65X900E, Xbox One X, Denon 3400
5.2.2 Dual v3601, PSA 210T L/R, PSA210C, DIYSG Volt10 Surround, BA SoundWare Atmos