There's no such thing as "24 bit vinyl", all vinyl is analog.
I do a lot of needledrops, (vinyl rips), and I always encode as 96/24 flacs.
I believe that I can hear a difference. But I would encode that way even if I didn't believe that, because I want to give my needledrops the best available technology.
Be careful with remasters. Many remasters are worse sounding ( in many cases MUCH worse sounding) than the original release.
Whether CD or vinyl, one of the guys who has the biggest impact on how an album sounds is the mastering engineer. He's either the unsung hero, or the unsung villain.
That's why if you're going to get used vinyl, you need to learn to read the symbols in the deadwax. And if you're going to go with newly released vinyl, stick with labels you can usually trust. Like Mobile Fidelity, Audio Fidelity, Speakers Corner etc.
The Steve Hoffman Forums are chock full of people who can help you with deciding what releases are worthwhile. But beware, a lot of those people are nutjobs, and Steve is a huge ****** bag...