I can't comment on the Scarab AVS. But, i've owned a Formula and have a Hustler. Both, are excellent boats. But, I think it's like comparing a Mercedes to a Ferrari. Formula is geared to creature comforts, Hustler speed. Formula may be a heavier boat, but they're built like a tank. I wouldn't hesitate to buy another Formula. Even if it wasn't as fast. Suggest try them both, then decide.