Re: bat machine or stiller
As I read the pricing on the BAT site, I make the price for left bolt/right port to be $1400 (base $1350 plus $50 for left bolt), not $1480 - "saves" you $80.
As long as you don't need a repeater, and you're willing to muscle the extra weight (100 oz vs 61 oz), and your stock will support a 2.0" round action, you are, IMHO, much better off with the L2R BAT. Slightly shorter than the Stiller (0.250), MUCH heavier construction, unmatched quality, and, also IMHO, a much cleaner, slicker look. I've asked Stiller whether they'd produce their TAC408 repeater with the rounded port opening of their Diamondback but no go.
Enjoy your BAT. You won't have any reason to look back.