Breedlove or a gunny puck. Google Them. I know the breedlove mounts are good. Haven't heard much about the gunny mounts but I think they are well made as well. Sirio sells a hard mount setup with upgraded coax that will Handle over 1000 watts. I would not put more than that through the sirio antenna anyway. If you want an antenna for power look up the predator 10k. But for 500-1000 watts I think the sirio turbo or performer 5000 should work.