I go through them even faster than that. I went through I think probably around 13 one piece sticks this past year and I only played in probably 35 games, maybe more, but I had a fair number of practices.
I had a 2 Vapor XXX's, a couple XXX-Lites, 2 synergy SL's, 2 Vapor XX's, a synergy ST, a warrior Dolomite just recently, and a Stealth. The stealth was the only stick that I haven't broken or had a problem with, but its the old stealth and it was a warranty replacement for one that I broke after 2 games. Worst durability by far is the XXX-Lite, followed by the XX and then the XXX. All of those, I'm hoping the Bauer One90 Stick coming out soon is going to be durable.
I'd suggest a synergy ST, i never broke it. The SL's break easily. I don't have a super powerful shot, it's accurate with a quick release but I get my sticks slashed all the time because I have the puck on my stick more than anyone else usually in my games so that's how mine break.
Go with the ST IMO and I've heard the new stealths have all these new slashguard reinforcements in the shaft and I've shot with one, it's a nice stick, it just depends what you want or what level you play also, Synergies have the best durability even over the dolomite which was supposed to be super durbale, it broke on the inside and feels like when you have a loose blade in a shaft when u hold it.