If you do the research, it is debateable if the upscaled video from a 2910 is better than the non-upscaled video of the 2900. You can also debate which has a better deinterlacer. Audio wise, from my research, the 2900 is better.

Whatever the tradeoffs are...I think they are minimal. I know the 2900 is built like a tank, and its successor is the 3910, not the 2910. If I had the cash...I think I would have still debated the 3910 vs 2900.