wet sanding? Or, just buff

[twenty2]

I've got a 2003 Black H2, I've gotton alot of scratches from towels, wax build-up with some spots of oxidation. I want it to look like a showroom finish. People have told me to get a wet sand on the truck to get ALL of the scrtaches off... and others have said to just get a buff with some good polish to finish it off.. and that will also do the job. Anyone out there have any suggestions if you guys have done this??