Don't know if they have stopped making it (springfield) but there are still many on the market, and they will still warranty it. It's still on their site though, and I don't think they've stopped making it, nor ever will. Someone correct me if I'm wrong here, please.
Colt makes the series 70, don't know how close to the original style it is, but I can't tell the difference by looking at it (I'm far from an expert too), but Colt is the original maker.
I'm leaning heavily towards one of these two now (after much ping ponging back and forth on other models), and I wouldn't let a rumor, or even if it's fact, of SA not making them stop me from buying it. As I said, there's still bunches of them out there to be had even if production has stopped on them. My local sportsman's warehouse sells them starting a $517, that's comparable to a good Filipino GI style. SA has some parts made in Brazil, but they are still an American company with American employees that are working to feed their American children. And that goes just as strongly for Colt.
BTW, if he is claiming that the supply has already dried up on the SA GI model, shop elsewhere and don't give your hard earned money to a liar.