The real problem Jared is that its addicting. That's why you hear a lot of guys say just skip past all those cheap ones and buy a premium Tool like a Flex Forced DA, or Rupes. But I understand if the budget is a concern, you cant necessarily get one or the other. However, if you have a addictive personality, and once you start doing new things and want to concur them....just buy a Flex or Rubes right off the bat. Theirs always tons of PC for sale gently used for this reason.
I had a Porter Cable Random orbital for 2 years when I first got into it, Worked great, fairly low vibration and noise. Adams Makes a great point on that.