Having owned a VTX 1800 and a M8 107, admittedly years apart, I would’ve guessed that my M8 would’ve pulled it out of the hole but the X would run it down eventually. By the seat of my pants, the X just felt stronger, but I could be wrong. The M8 is a very good motor though and no slouch.
'03 VTX 1800 C, '05 Yamaha Midnight RSV
"I only use my gun whenever kindness fails" - Robert Earl Keen.