Dealer's Wherehouse/Pacific Armament Corp, the guys that import most of the Imbel receivers, has gotten a bunch of either Brazillian or Argentine kits and they're supposed to be pretty good.
I bought my kit at Entreprise, because it's only 20 minutes away from me and I could hand pick my own. It was a nice kit.
Federal Arms does a pretty good job of honestly describing their wares.
What you should do is ensure you can easily return the kit if it doesn't meet your expectations. Talk to whomever is in charge of returns/refunds and get a firm understanding with them. I think some of these big mailorder places don't actually do any grading on condition.
[This message has been edited by Destructo6 (edited August 17, 2000).]