I'm with Danyboy58; WY2206 is a great lager yeast. Very versatile, and handles repitching well. A few years now I've bought one smack pack and kept it going for several beers over a number of months with great results. That said, if I don't plan to brew several lagers in a row, I'll often use 34/70 which is also good. Have tried 2308, Bohemian Pils, Danish Lager and American lager strains in the past, and each one brings something unique to the beer, but for the majority of my lagers I'll use the 2206 or 34/70.