Depends on priorities. Quick comparison:
| Factor | PlayStation 3 | Xbox 360 |
|---|---|---|
| Exclusives | Uncharted, The Last of Us, God of War, MGS4 | Halo, Gears of War, Forza, Fable |
| Media | Blu-ray player (huge at launch) | DVD only; Netflix first on console |
| Online | Free PSN (later PS Plus for MP) | Xbox Live Gold required for MP (more stable early on) |
| Controller | Sixaxis/DualShock 3 (no rumble at launch) | Ergonomic, rumble, replaceable batteries |
| Reliability | Yellow Light of Death (early fat models) | Red Ring of Death (epidemic on early units) |
| Backward Compat. | PS1/PS2 (early models only) | Select original Xbox games (emulation) |
Choose PS3 if: you want the strongest exclusive narrative games, Blu-ray, free online (PS3 era).
Choose Xbox 360 if: you prefer shooters/racing, better controller ergonomics, Xbox Live party system, Kinect.
Both are retro now; buy refurbished with warranty.