As you say, the sound difference probably won't be huge, except for there being less hiss. But as you also say, there should be some (perhaps slight) improvement in the sound for the better. And the new 950 has upgraded parts. And the measured S/N is improved.
While the hiss reduction is the main improvement, those other "incidental" improvements were probably made by Outlaw in order to get the hiss reduction.
Anyway, I'm looking forward to hearing it!
[This message has been edited by Will (edited December 26, 2002).]