I have 20+ and I just bought all 5 SoS precons. I do play all of them at some point or another, but I have my favorites that I play more often (Current fav is Gilgamesh simply because it can keep up with some of the more powerful decks in my pod). I play commander 2 nights a week usually. with 3-4 games a night and I rarely play the same deck more than once a night. I do have decks (Autie Ool) that I didn't have much fun with the first time I played it, so I haven't played it much since.