XBOX 360 HDD size - how much do I really need?

I'm looking at an XBOX 360. I'll use it for mostly vintage arcade games from XBOX live, but will also buy some new games as well. I'm sure I'll buy more games as I get deeper into the deal, but I'm really starting out with it a console to play the old arcade games available from XBOX Live.

Is the 20 gig HDD going to be enough, or do I need to pop for the machine with the 120 gig HDD? Since they both have HDMI ports, that's not an issue. I'm not worried about the cable included in the Elite. How 'bout it guys? I find refurb standard XBOX 360 kits all the time for $200. Is it enough for what I want to do?
 

Premium Content

This thread contains exclusive content for our premium community members.

What you're missing:
  • Full discussion and replies
  • Community interaction and voting
Already have an account?
✨ Unlock exclusive discussions and premium features
Premium Benefits:
Exclusive content • Priority support • Advanced features • Full thread access
Top