I've used WLP530 with excellent results. I did a patersbier (mainly to harvest the yeast for higher gravity beers), then a golden strong ale and finally a Belgian IPA, the second two from the harvested yeast. All three came out well with the golden and the IPA being the best homebrew I've made so far. I've just taken delivery of some WLP550, the Chouffe strain I believe, and will be doing the same again with slightly different recipes.