Joshua,
either ped is a nice starting place.
go to the top of the page and read the aritcles on buying a used ped and Fred's guide. They'll get you started.
besides figuring out air colled and two stroke lubrication, you will also find that 2 stroke engines run a bit dirtier and need their exhaust systems cleaned every now and then.
centrifical clutches, too.. oh yea and older ones have points.