At the moment? Ps3 - Mortal Kombat.
Although, I do play low-end games on my Pc, and soon, I will be buying a high-spec laptop (Don't berate me, I need a new computer capable of playing games, so that I can amuse myself on the train, going to and from VI Form, and I need a laptop for my Computing A Level.), due to the fact that-
1. I prefer playing the majority of genres of games on PC
2. My desktop is seven years old. The best it can play is ME2, or L4D2. I need a new computer.