The 3910, 2910 or the 2900 will all work well. Given the price point etc and after seeing them all in action in my own basement, I dumped my 2800MKII and bought the 2900............yes the older one. I thought it had a better picture then the 2910 and although the 3910 had a slightly better picture (At least on my TV), it wasn't that much better and to be real honest, the 2900 does a few things better then the 3910. At the end of the day, I just couldn't justify the price of the 3910.
The link Ajax put up is a good one. Note the 2900 rates higher then the 2910 and only slightly below the 3910. You can't go wrong with a 2900.
