I bought the OT off of eBay a little while ago. The quality is pretty good, actually. I was impressed. Yeah, it has the fake 5.1, but even that wasn't horrible. The capture is pretty good and the compression isn't THAT bad. Much better than VHS.
I also bought a set from someone on here (tK47.. something like that -sorry, very bad memory). I've heard these will be better. Ethically, I'd rather give money to a fan than some "bootlegger."
But I'm sure you'll be happy w/ the ebay trilogy.