hopefully, in addition to the already mentioned Epics and QCC 700 the OP looked into the West Side EFT, Van Dusen Mohican K-1.
Check out the Valley Rapier 18 or 20 too.
These are the kayaks seen again and again at sanctioned competitive events. Surfskis in the 18-21 range are frequent entrants and place high as well, but I'm assuming the OP wants a SINK.
Just to stir it up I'll say there is NO British or Greenland style hull nearly as fast as any of these. Including any I own, including - heh - even NC Kayaks.