Willwrote a review of K2 Snowboards Maysis Boa Snowboard Boot - Men's on October 1, 2016
Familiarity: I've put it through the wringer
I think these fit great, but the quality isn't just bad, it's terrible. On the 6th day of riding one of the BOA's broke. After 12 days, a tear developed. K2 offered me a discount on buying a new pair, and wouldn't acknowledge their responsibility. I would avoid.
BTW: this was just normal resort riding days. Nothing that should have destroyed a boot that quickly.