I do prefer Winchester brass to the Remington.  It's much brighter and cleans up nicely... however Remington is much more available and plentiful.  I have 3 boxes of Remington ammo that I may shoot up this spring just to claim the brass (some of my current stock of around 400 is getting very long in the tooth with more than ten... and in some cases 20 loadings on them)!  Maybe I'll hit Cabelas and get a few more factory load boxes while I'm at it.