Headphoneus Supremus: HeadFest '07 Graphic Designer Supplier of fine logos! His visions of Head-Fi.
Best bang-for-buck Grado would be the Koss KSC75s.
Otherwise:
SR60 (it makes sound so cheapest always wins)
MS1 (first Grado without a Grato sound)
SR225 (on sources sources not significantly worse than RS1)