Axe
Hecks
Hexsee
etc....
All seem to be in use at the conferences.
I always considered it a preference/accent/nationality related, but in a
way I like to think that this represents the multi-target and
multi-national aspects of Haxe, it's really the logo that really defines
Haxe's identity more than the way you proununce it's name, but it is
common to miss the last 'E' due to the French origin, but living in
England I add it back like you seem to :), and then get corrected by a
friend who forgets that every other person has a different way to say it
anyway.
For instance I live in Bath and depending where in the country someone
lives the way they say it sounds quite different, obviously they should
say it quite posh with a a deep "R", but often they seem to have sneaked
an "f" at the end and forgotten the 't', or... So you should probably
try to say Haxe with a silent last "E" so 'Haxsee' is not very French
but beyond that not sure it matters, just think of the orange positive
color that is so tied to Haxe.