I used to have a job that involved a lot of sitting around doing nowt, so I purchased most of the crop of PC magazines to pass the time, and it does get expensive very quickly. I haven't been a regular buyer for five or six years though, but have bought a couple of issues of Custom PC recently, which weren't all that great.
The only mag I buy regularly now is Autosport, but only during the F1 season. I would half consider subscribing to Motorsport too, as it does feature some good articles.