I just got my custom 90gal sump built by Gold's, I think it was indeed Gary that built mine, along with my 230 gal starfire glass tank. The sump was a last minute idea, cause I was originally going to try and build my own, then thought screw it. The sump was done in three days and only cost me $150.00. I will post pictures of the sump on my Tank Build Thread soon.
Overall I was happy with Gold's tank builder. The only thing I was disapointed in was, their was two marks of silicone on the starfire glass for me to remove AND I was really surprised that the tank wasn't wrapped up somehow when I went to pickup. After all, its starfire glass and it scratches easy.
Other wise, I'm happy with the price, quality of glass, fast customer service and short time it took to build.
Hope that helps.