Of the few I've had several opportunities to hit outside and really compare, I'd put M1 solidly out front. 816 DBD would also be a decent upgrade for me. The other three couldn't beat out my '14 Bio+; Mizuno JPX EZ, Srixon Z 545, and GBB, in that order. I'm still looking forward to getting a chance to test all the new Cobra offerings, both XR16s, M2, and the G lineup. The King LTD felt great but I only hit it inside at a store, so I can't really rate it yet.