pantheon is just a motor/concept right now. i'm certain that once it supercedes prototype status, we'll see it winning its share. havn't heard of the second one though. phoenix gold?
the pg gold cyclone is supposed to be a crazy sq sub. and the parthenon can be desinged and sold now, to start the project you have to give a non refundable 1 thou, then its base price is 3 though, and to get it totally customized its normal price will be 4-5 thou, i read somewhere on google if u have the money they will build it now, i woud love to see this thing in action or actually working