Seton's Clutch
This 20 x 20 map features two large land masses, cut across by a large valley of water. This is probably the most popular 20 on 20 map in Supreme Commander, since there are a variety of ways to play it. Don't forget about the land mass through the center that can provide a venue for land vehicles. If you've got the balls for it.
this is a 4on4 DREAM map.
however, i would only suggest if ALL players have an INTEL core2 Duo w/ atleast a 300MB PCI-X card with a couple gigs of high speed ram...