I'll cast votes for either 1Z Cockpit Premium or Poorboy's Natural Look. Either of those produce closer to a matte finish than either 303 or #40. That is not a rap on either of the latter two products, which I use with some frequency with nice results.
One particular problem I have with 1Z CP is on the smooth/hard surface of the VW New Beetle's dash. It produces a splotchy appearance. I haven't encountered that problem on any other interior surface. :nixweiss
Interesting about the 1Z on the VW dash. My dash has a very light texture to it and is actually pretty prone to splotches but I'm not going to worry too much about it. I just want to use something that will not be satin at all and has UV protection.