nLite is excellent. It has a few quirks, i.e., not installing RVM updates+addons in the order that they're selected, but all in all, it's an excellent program.
Anyway, vLite is lacking at the moment. It has a few bugs, and it's not really intended to be used my average users. He's just opened up beta testing to everyone because there's so many knowledgeable people in that community. He's extremely thorough. IIRC, nLite was in beta for a year or 2 before it went final. In any event, I have no doubt that it will be perfect when he's done with it. Until then, people will just have to tough it out through the bugs.
Visit the vLite forums if you care to be updated on latest bugs and whatnot.