X2. Certain bows will shoot for you that won't work for me, and vice versa. The Vectrix XL and the Katera XL are two of the nicest longer bows I have shot recently - 36" ATA. Getting 290 fps out of a 31" CE Terminator is going to tough, though. I have some of these arrows. They weigh about 510 grains with a 100 grain broadhead. Maybe a PSE X-force could do it . . . .