Hi M
The way I see it is, if you can get the 103 in lefty you should pull the trigger, I had one and regret selling it.
Heaps of members game this head, the feel is awesome, v forgiving, (long split fairways)
The other good thing about this head is, if you buy new then weight and face angle can be specific.
I haven't seen any comments on new yammys as yet but do know that are not endo forgings as in the past.
Good luck with u choice and hope this helps.
H