US-05. It costs a lot less, it produces a neutral ale flavor across a wide temperature range, no need for a starter, it easily ferments high OG wort down to 1.010 or below, and it lets the hops come through on the finished beer. My only complaint is that it does not floccuate well. I can get a clear IPA, but it takes a long cold conditioning phase and gelatin. IPA's are pretty easy beers to make, so I don't fool around with any other yeast. I mostly play around with the hop additions, and to an extent the grain bill, when I want to change things up a bit.