Last fall I posted a request for information about DMC epoxies. Getting no advice I decided to go ahead and purchase the epoxy after speaking with the company directly and finding out it's actually made by System 3 epoxy.
Well I made a water barrel from the epoxy using Luan plywood, and have to say it's holding up as well as the System 3 (or MAS--can't remember which) I used on my Northbay. It also has the added benefit of being 100% clear. It goes off at a reasonable speed and spreads smoothly and easily. I haven't done any strength tests, but can't see any noticeable difference in what I'd expect given the forces I'm putting on it.
I bought this stuff from Fiberglass Warehouse for about half the price of most "name brand" epoxies, and I'll definitely be purchasing more in the near future.
FrankP