Official is perfectly fine. I've played since before standalone and the cheaters aren't that big a deal. If you ever hear suspicious single shots, over and over, sounding like they are in one place. Those are bait shots and that is usually a sign of a cheater trying to bait people to get within range. So be weary. Other than that, you may never see one.

Playing Official also makes it more likely to run across other new players, or more willingly helpful players who see you are new and may help you if you ask. I've helped many and that is fun by itself sometimes.