Thanks for your reply Charlie. I have used the Stynlrez with mixed results. What I don't like about it is just seems to gum up the airbrush. I'm just a big fan of the Mr Surfacer primers but they are lacquer. Have never used the Tamiya acrylic.
I'm gonna try the Createx, which I do like, with the new 4021 thinner and see what I get.