Didnt they really say "if you haven't noticed a hiss problem in the 950 you have, you probably won't". Meaning it would not develop over time.
There may be a hiss problem if you move a hiss-free 950 into a different environment.
I think the Outlaws have updated the 950 so that it will not hiss as much as an un-updated 950 does, in whatever types of environment causes a 950 to hiss.
as they have said several times, have them send (on their expense) you a new "fixed" unit, place it into your system, and listen to it. If it sounds better (less hiss, etc) than the original, box the original up and send it back (at their expense again) to them. If its no better, send the second one back (on them) and tactfully discuss your options with Scott.
That would be desirable. However I was under the impression (maybe I'm wrong) that they won't send out the FINAL fixed 950 to people with an ORIGINAL 950 until they send back the original 950 (although the shipments would all be, to the Outlaw's credit, at the Outlaw's expense). They sent out INTERMEDIATE fixed 950's (which are, sort of, beta test units afterall) before getting their original 950 back, but I was under the impression they would not do this with the FINAL fixed 950's. But if I'm wrong about that, please let me know.