Plug Welds - Mig or Tig?

[strokedelky]

I am a welder by trade but don't do too much sheetmetal. I'm in the process of replacing the roof skin on my El Camino (had a sunroof) and I was wondering which would be better. Mig or tig for the plug welds? I know most do it with a mig but was thinking tig may be a little less work afterwards (no welds to grind down). What do all the experts here think on this?

Thanks, Darren