Pc.
You can build a better pc for under 500 if you use parta from other computers you own
Motherboard
ram
case
hardisk
powersource: if over 500
For 300
you can get a decent graphic card and a quad core processor. The rest 200 upgrade the rest. Ram and mobo and psu
Why get pc? Since you you can use a xbox controller for games like gta iv and several others.