hdavim... thanks for the thorough review. you mentioned v1 you're sorta maybe between 2 sizes. you mentioned v3 fit and thean s/m fit well, suggesting that it's cut a little larger. you also said your v2 s/m also fit, but don't think you talked too much about specific fit of the v2.
i'm right smack dab at 4.5" from bridge to chin with a health size jewish nose. i started a thread on "questions about bags" about mask sizing and the consensus was go M/L not S/M. you sound like your similar or even a small measure up, but you sound happy with the S/M in v2.
i think i really want the neck strap for the constant on and of that seems will be the norm for foreseeable future so mainly interested in V2.