The short form on vocal mics- It's a bitch, because no one can answer your question. Mics are like shoes- they either fit, or they don't. Cheap shoes that fit are better than expensive ones that don't. The shoes also have to be right for the job. Ballet toe shoes are not that good, if you are a lumberjack. No one can listen to clips and tell you what mic will work for you. All they can do is recommend mics that work for *somebody*. The mic your hero uses probably won't work for you, anymore than his shoes would fit you. And you can't look at him and tell what size shoes he wears.
So what can you do? First, never miss a chance to sing through a mic you have never used. Who knows? You might find the Holy Grail. Secondly, buy respected mics from respected companies that work for somebody. If they don't work for you, they'll be easier to resell. Besides, if they are good mics, they'll probably be good for recording *something* or *somebody*.
Beyond that, all I can do is recommend mics that work for me, or somebody else, and describe the general characteristics of mics. Mostly, I recommend starting with a good dynamic mic and a good entry-level condenser. Dynamic mics are often more forgiving of a bad room, and tend to pick up a little less background noise. The high quality ones are also a lot less expensive than top condenser mics, which can rise to the price of a good used car. This makes a good dynamic attractive to a beginner. Condensers often offer clarity and detail. If you have a bad room, or you're not that good a singer, condensers will tend to reveal that in living color. It also matters what you are plugging the mic into, because condensers need phantom power, and the top dynamics, with their weak output, need a preamp that produces a lot of gain without a lot of noise.
Given the way your question was asked, I'm guessing you're not likely to spend $1000 or more on a vocal mic right now, so we'll leave the top condensers out of it. Here's a short list of just a few of my favorites, trying to stay at $500 or less-
Cheap dynamics: Shure SM57 (lots of people love this mic. I hate it, but that's only because it's a shoe that doesn't fit *me*) Sennheiser e835 (the cheap shoe that fits *me*)
Better dynamics: Shure SM7b, Electrovoice RE20, Sennheiser MD421. It may be none of these shoes will fit, but they are all real good shoes. I'd start on that list right there.
Entry level condensers: Marshall Electronics MXL V67G, Studio Projects B-1, CAD M177. All of those are cheap shoes that work for somebody
More pricey- AKG C2000B (one of my personal favorites), RODE NTK, B.L.U.E. Baby Bottle, Shure KSM27, KSM32, Oktava MK319. All of these are shoes that fit *somebody*. The C2000B and NTK fit *me*.
There are *bizzillions* of other mics that work for somebody. Good luck finding *your* mic.-Richie