I find most beer requirements can be accomplished using a primary. The beer will clear itself over time, if not in the fermenter, without a doubt after sitting in the fridge for 2 weeks in the bottle. Dry hopping is no problem in primary, the results are excellent. As for racking off the yeast, there is absolutely no need to unless the beer will be sitting for months at a time: 3 or 4 weeks on the yeast will actually IMPROVE the flavor by allowing the yeast to clean up. Autolysis is a myth, especially pertaining to short term conditions such as a few weeks. I'd be more worried about contributing off flavors while transferring to secondary due to either oxidation (although I believe it is extremely hard to oxidize your beer) or contamination.
But I'd take Revvy's advice and read that thread to decide for yourself. To each his own, to a certain extent...