I sure like the s-04 and s-05. They are fast acting, eat a lot and don't need a starter for most of my 1.06x beers. Simply rehydrate with some clean water in a ziplock bag and pour in.
Even when I ferment at ambient room temps of 62F the bubbling is done and yeast are dropping out within 3 days. I still let the yeast clean up for a week or 2.
Wonder how similar the s-05 is to Rogue's awesome Pacman yeast.