> 10.5 works fine, so the question is, why update?
>
I recall seeing some people complaining about some bugs with the 10.5 build (I think it was related to form controls but I am not sure), for them, updating was sort of necessary, also, 64 bit support (but losing XP support I think).
But I agree with you completely that if it does not bring anything worth it, staying at the same version is fine for now.
You don't actually need 64 bit unless your game needs more than 4GB ram access. Performance is pretty good on 10.5.