Hmmmm... It's a pity you need to find a good deal locally for the 4805 as it is clear and away a better projector then your other choices and as it just so happens is a power buy right now. But, if you can't go with the 4805 (which would by far be my first choice) it depends on what you want to use it for. If you think you are affected by the rainbow effect of DLP projectors then the H30 is a good choice with it's 4x color wheel for a bit more money. It also has great color compared to the X1 and BenQ 6100. If you are not bothered by the Rainbow effect like I am, or if you plan to watch any kind of 480i material (like TV, VHS, DVD running on a non-progressive player) you may want to check out the X1 with it's Faroudja de-interlacer chip. For 799$ The X1 is a steal. It also has the longest lamp life with a lamp lasting 4000 hours and costing 300$. Food for thought if you are on a budget. The BenQ 6100 on the otherhand is a projector in the same price range as the X1, but with a 3x color wheel instead of the 2x color wheel that the X1 is packing. Again, a issue if you are bothered by rainbows. But if I may say so, if you ARE bothered by rainbows you would be better off spending a few hundread more bucks for the H30. Bear in mind though that neither the H30 or 6100 have a de-interlacer as good as the X1's faroudja chip, but that may not be a issue if you only plan to watch progressive material or better. With that said I highly suggest you get a Infocus 4805. It matchs the H30's 4x color wheel while matching the X1's faroudja chip and lamp life in addition to be a true widescreen, hometheater projector complete with a DVI input and Component input. Both of which are lacking on the other 3.