WLP051 for most American ales: more balance btwn hops and malt, flocs better than 001
WLP530 for Belgian dubbels, trippels, dark strong, etc.: ester profile is hard to beat for these styles
WLP550 for Belgian pales, Bel/Am hybrids: a little crisper, cleaner but still nice Belgian character
WLP002 most English ales: predictable, tasty, flocs well
Cultured Fantome bugs and WY3711 mix for saison: pitched together, the 3711 tears through most fermentables quick and leaves just enough for the bugs to make themselves known-nice tartness, slight funk but not over the top (this one is relatively recent for me but I've brewed three out of my last four beers with it and am loving the results so far)