I have a Panny ae500, and the screen is 72" wide.
I'm very pleased with it at the moment, but i might re-organise the room later in the year and put the pj further away, to give a 92" wide screen .
Z1 with a 120" diagonal image projecting onto a matt white painted wall.Very happy with the results, no ripples unlike my brother in laws Z1 with home made screen made from blackout material ripples are very obvious.
Untill a reasonable priced purpose made screen with no ripples or curles becomes available I am more than happy with my no cost painted wall.