Wow, five pages and I'd say you missed an important one.
In my fridge the following four are always there:
Siracha
Tapatio
Cholula
And the one that I think you all missed Valentina Extra Hot.
Of course I have gone through some Melindas and most of the other store bought bottles mentioned, but Valentina Extra hot is a damn fine hot sauce. Also Cholula and Siracha turned me off a bit with their pricing. They both used to be two bucks or less and now they want 5 per bottle. Tapatio and Valentina still have the best pricing of the popular ones. There are more showing up on the shelves though, and I would not be surprised to see two or three brands emerge as super popular replacements for these in the next few years.