Before you decide on a PJ - would background fan noise be an issue for you?
I personally discounted any DLP models simply because of the damn fan noise
26 to 29db or higher (optomas etc) is damn noisy.
Conside where will PJ be in relation to seating area - ceiling height etc in order to fill the screen size your looking at.
Re Fan Noise - If you have only ever watched movies on a large screen TV then this may be an issue for you. If the PJ is in a housing then that may quieten it down but have to say the cinema experience at home is a lot better with less ambient noise from kit (Ps3 HD DVD and PJ - it all adds up and can spoil quiet sections of a movie)
Not decrying DLP or anything but personally for me I would look at fan noise; then lens throw as well as resolution.
Re suggestions Id have to say Mitsubishi HC6000 (which I have) or Sanyo PLV-Z2000 (or the newer z3000)
All have good warranty (sanyo typically 3 year)
Panasonic a consideration but heard to many comments on dust blobs etc
Sonys SXRD non local for me to check/review but believe they should be a consideration (again low fan noise)
Sanyo PLV-Z2000 Projector (PLVZ2000) Mitsubishi HC6000 Projector (HC6000) http://interactive-av.co.uk/projecto....php?pid=25748 Sony VPLVW40 - VPL-VW40 - VPL-VW40 by: Sony - 247AV.com - 247av.com
Do a scan through the owners threads for any issues on any given model.
Good luck and enjoy.