I fucking love them. I like a few different ones for specific applications. I use the stuff on almost everything.
Lately I have rediscovered plain old Tabasco. I put it on the more Americano dishes. Usually on breakfast foods such as eggs, potatoes, or country fried steak.
For pizza I really enjoy the garlic Tabasco.
Rice bowls and other Asian inspired things get the cock sauce, Siracha.
Cholula is probably my most favorite for overall all around use but it's pricey. The Chipotle Cholula is good but it sometimes seems too sweet.
As far as store bought salsa's go the taquera from Herdez is so good as long as you like the smoked peppered taste. Goya has a similar taquera that I get when I can't find the Herdez.
What do you like and for what?