I started out using Nottingham and Munich, but when they had the quality issues and followed that up with price increase, I swithed to the Safeale yeasts. I've used US-05, S-04, S-33 and T-58. I have some WB-06 on hand, but I haven't used it yet. I don't think I have a favorite, it is more dependant on the recipe.
Drinking: Raspberry Trappist Ale and a Belgian Tripel
Bottle conditioning: Orange Peel Pale Ale
Fermenting: Easy Street clone and an all Chinook IPA
Planning: IIPA and a Pale Ale
I've had good luck with T-53 for my belgians, and S-04 for stout and a pale mild. I also made a good Hefe style with Danstar Munich.
I was somewhat less happy with my one attempt with Windsor, but I'm not sure I'd chalk that entirely up to the yeast, and I'm planning to try it again sometime.
__________________
That's bread yeast. Look at it sitting there, all depressed. Listless. Beer yeast doesn't look like that. It has hopes. Dreams. Something to look forward to...