New board
Definitely Stingray. They're all much too expensive in terms of Alien Materials to justify going lower, and aside from being very slightly thirstier on the antimatter it dominates the alternatives statwise (most notably in speed).The only two reasons I can think of to build one of the others is if you're stuck with a desperate and immediate need for interception capability beyond the Stiletto/Saracen and are either still progressing along the research chain or lack enough Alien Materials for the Stingray (including stored UFOs waiting for disassembly). Probably an area that needs to be tweaked.~J