I've had my AE300 (from Nexnix) since Thursday, but this is my first PJ so a review by me wouldn't really be of much use I don't think.
I've got it set-up at the side of the room in a cabinet that I had made for it and all the other AV equipment, as I mistakenly thought that I could live with keystone correction. WRONG ! Admittedly it is set rather high (24

, and the maximum is 32), but it really does make the opposite side of the screen blocky. I expect this is because it is losing most of the pixels from this side to correct the image. It's also softer due to not being in focus properly.
Just to see the difference I put it in the centre of the room and set all correction to 0, and it makes a big difference (as expected). I also changed from interlaced via S-video to progressive via component (thru a Sony DAVS-880MR) and I think that's made quite a big difference too.
Now it means I've got to try and build a boxing around it so it's not an eye-sore when it goes on the ceiling, as now I've seen how nice the picture can be I can't face watching it mounted where is it !
I took a quick snap of Monsters Inc (link below, MonstersInc2 is the better of the two), but it's really just for people who've not got the chance to see a PJ in the flesh, as pics (especially this one) don't show it in its best light. It's only a 2 m.p. camera as well, hence the graininess. Word of warning though, it's 270k, but if you're not on broadband you should be !!
Overall I'm very impressed, can't wait to get it properly mounted on the ceiling, I feel like I'm wasting lamp hours watching it as it is !!
Any questions just ask, I've learnt a lot of this forum and it would be nice to give something back.
edit : Link didn't work, will re-attach when I've sorted it !!