> Any opinions of the various epoxy systems available or recommendations for
> good economical sources? I live in the Portland, OR area.

I live in Manning, OR. Not too far from you. I have used system three, and it clouded a little in one spot. I think that is because of the way it was stored though. I have since been using MAS. It takes a little longer to set up but is very nice epoxy. I dont see a reason to switch.