I'm looking to upgrade from my single 8800GT. My monitor is 1650x1050. The options I'm looking at are to pick up another used 8800GT and go SLI or to sell my 8800 GT and get a 5770. Both options should be about the same net cost with the used 8800 GT possibly being a bit cheaper and not having to deal with trying to sell mine. Looking at benchmarks it seems the dual 8800GT will still be a good bit faster at my max resolution. Does anyone have any reason why I should go with the single GPU over the SLI solution?