I think HBO MAX will be great, the Warner Bros catalog has plenty of movies I would like to purchase from iTunes but now wont have to since they will be available on HBO MAX. The only caveat is the PQ, and if it's anything like what HBO looks like through the Apple TV+ app it'll be a no brainer for me.
Projector: VPLHW40ES + DIY 125" Screen AVR: CX-A5100 + B&K REF 200.7
Speakers: DEFINITIVE TECHNOLOGY BP2000(FL/FR), CLR2000 (C), DEFINITIVE TECHNOLOGY BP10 (RL/RR),
MONITOR AUDIO CT265FX (Ceiling ATMOS/DTS), (4) MONITOR AUDIO CT265FX (Ceiling R/L REAR SURR)