As for AMD/ATI, after 30 years it's hard to change an old habit. As for SLI/crossfire - I offered that only as an option and there are pros and cons. I did mention in the article that SLI/Crossfire would only be necessary if you plan on using a 50" flat screen. Basically similar to what you said. Bottom line, there's no right or wrong - it's how much you want and are willing to spend.
RE: Building the Ultimate Gaming Tower - Part 4