I would still stick with the choice I made a year and a half ago. Epson 8350. Great for gaming with low lag, great placement flexibility, really good picture quality (great with Darby), and no rainbow risk. If I were to look for a replacement for the 8350, I would only look for something with significantly better black levels. I don't know of anything near this price range that qualifies AND has all the features that sold me on the 8350 in the first place.
If I could actually see a demo of the BenQ W1070 in operation in my area, and that's not going to happen, it would be on my list.