Porter Cable Buffer + Meguiars = Miata Bling

[Maengelito]

well, not necessarily car bodies, but i'd like to have a power sander in general for wood work, maybe some metal, maybe sanding car parts, etc. and then i'd also like to have a polisher for waxing and buffing car bodies, yes. so would i need a variable speed one that dips down to 1k rpms and has a higher end like 5k rpms?