Well do some research and then decide.. 7.3 are suppose to be "bullet proof", 6.0 need some upgrades to be "bullet proof".. to me its all a gamble really. I bought a 7.3 and have had nothing but problems.. 3 months into owning I have an injector litereally blow apart putting a hole through a piston= new motor time, now I'm having electrical issues.. Take everyones word with a grain of salt its the internet.., research and know what your going to need to do. Theres some good guys on psn and the better guys are probably here with the army already... By the way Welcome.