[left footed whooten]

Need to change the trans oil in the wagon (06 WRX) and I've been looking around on the big forums, but nothing but retarded unclear opinions.

WANT:
To improve shifting feel and action if possible.
To quiet the gearbox if possible.
To put in oil that will improve protection and be at least as good as the OEM SS oil.
To have the oil appropriate for the climate, Truckee, 0 degrees up to 80+ degrees of temp range.

DONT WANT:
A hair brained ten-ingredient concoction.
To use something that no one else seems to use.
Anything that is more track-specific, meaning I mostly drive my car in the real world, maybe some autox if I get lucky this year.
Uncle Scotty's cocktail.

I'm thinking Pennzoil syncromesh 75w 90, or perhaps a Redline product. This is my first trans oil change in this car, so nothing to compare to. Mostly want something that will be as better than stock possibly improving engagement/feel and that will not be solid during winter freezes.

Inputs?