I don't know.... Rage does work better and pinholes aren't as big a problem.... Have never put the pencil to it to see how the numbers work out.... I use Rage Gold on my own stuff, but then I don't really care if the product is a few bucks more....

As competitive as bidding is in a high volume production environment (and no, I don't miss it a bit!), I'm not sure the extra $$$$ for Rage would be a + on the ledger..... and in production work, the bottom line is really the only thing that counts....

I've also been known to mix a little bit of metal glaze with my Z-Grip before adding the hardner...bye bye pinholes---if you cut back a bit on the hardner... But again, not a process that would be cost effective in production work.... Pennies per application is a lot of $$$$$ at the end of the year!!!!!!