There are so many that I love, and most of them for specific things. My big thing is that I'm picky. Tor instance, I will only use Lee & Perrins Worcestershire Sauce when I use Worcestershire Sauce. The others don't come close in flavor IMO. I also prefer Hunts Ketchup to Heinz. I favor spicy brown mustards over yellow prepared mustard, except on ham slices. Then, it's just the opposite. I love sour-cream, but not on spuds. Then there are the homemade condiments like quacamole, and it has to have Tobasco Sauce in it. No other hot sauce has the unique flavor. And don't even get me started on cheeses. I've ahd the oppotunity to consume award winning cheddars that make supermarket cheeses pale by comparison, and yes, cheese can be used like a condiment. Think chili-cheese dog.
And don't forget that little bit of fungus heaven, white truffle paste. All I can say is wow, and use sparingly.
There isn't enough room on this page to list everything, so I'll just cut it short here.
Seeeeeeya; Goodweed of the North