I would feel cheated with a 40 screen - its like a postage stamp!
I HATE having to peer at my mates tiny 37-40 odd inch TVs, and to me they always look pish compared to a projector.
but watching estenders on a 90" is just sad. Sad for using a projector & sad for watching it.
Ive had my Projector for over 2 years & ive only used it for a total of 300 hours. Got a 32" for most general viewing.