I'm looking for recommendations for a paint sprayer to do some large areas.
It is pretty much a one time deal so I don't want a $10,000 pro rig, but I
don't want a Wagner toy either.

We'll be painting 25,000 square feet of ceiling and about 16,000 square
feet of wall. I'd like to be able to attach it to a 5 gallon pail and let
loose. Paint will be latex. Next year we may do the outside but they that
will be it for 5 years or so.

Any suggestions? $500 to $750 would be a good budget number.