Nice summary. Did the same thing you did; just 3 years previously.
Very satisfied with my results. Now, I’m looking at the new LED projectors and that was a mistake. Envy is kicking in. Imagine a bulblife of 50,000 hours (as we both control outside lighting - we can run in ‘economy’ or ‘standard’ mode).
Once you go with the ~100+ screen; it’s impossible to go back. I really feel like I’m sacrificing when I have to suffer through a movie on my 50” plasma. Plus 100% agree with you on the Blu-Ray comment. You really don’t appreciate the Blu-Ray resolution until you get well beyond the 60” range.
It's real easy to jump from super giant to small than to go to the inbetween sizes.