Just going to copy-paste my post from the last Turtle Beach sale. TL:DR is that Turtle Beaches are decent sound in crap construction; Trittons and Astros are less likely to break but cost more.
I bought a pair of Turtle Beach X1s (I think the equivalent is now the x11 or x12?) about two years ago; they were good for an entry-level stereo headset, but were not durable: one of the earcups snapped off entirely when I took it off my head after a gaming session (not a ragequit, either; I don't throw my pricy electronics). I got it replaced under warranty, but I ended up buying a set of Tritton AX Pros, which are waaaayyyy sturdier, besides also having 5.1 surround. They did cost 3 times as much as my X1s, though.
That said, in my circle of friends, one guy bought the X1s off me and is happy with them, one guy is a longtime Turtle Beach customer whose most recent X41s crapped out (and this is the third set in about a year and a half), and he's replacing them with a set of Astros, and the rest are a mix of Trittons and Turtle beaches.
Overall, the sound quality on Turtle Beaches is pretty good, but what has driven me and several of my friends away is the quality of their construction, which has been declining even as the price goes up. If you want something which isn't flimsy, I'd say get some Trittons or Astros. If you want something inexpensive which you won't use super frequently, then Turtle Beaches may work out better for you than they did for us.
Edit: Also, for context, we mostly play Call of Duty (two time Kill Confirmed world champs woot woot), which is why the AX Pro's surround sound matters to me. If you just need something to not disturb your neighbors, the Tritton Trigger is probably good enough, and costs $50 instead of $150.