iPhone without a doubt. As rocketpig said, the device is absolutely awesome in every way. I'd almost buy one over upgrading my computer... almost. If you have any other console then a PS3 is not needed, in fact it's not needed even if you didn't have any other consoles. The iPhone is just that godly.
Tag(thx fkusumot) - "Yet again I completely fail to see your point..."
HD vs Wii, PC vs HD: http://www.vgchartz.com/forum/thread.php?id=93374
Why Regenerating Health is a crap game mechanic: http://gamrconnect.vgchartz.com/post.php?id=3986420
gamrReview's broken review scores: http://gamrconnect.vgchartz.com/post.php?id=4170835