I've just bought a PTAE100 off Oblivion (very pleased with the deal, thanks mate) with the intention of setting it up as a permanent fixture in my living room. The PJ will be hidden up in the Oak beams on a small platform about 230cm from the screen. This would appear to give me the required 6' image from a little experimenting. I'm worried that if I decide to upgrade in the future that another model will give a bigger or smaller image at the same distance. I'm aware that the 100 is not a top of the range PJ but it'll do for a while. So, do they vary widely or are they all roughly the same? Or, can you get different lenses or something?