Starise, here's my opinion for what it's worth brother. I'd go to a store where you can try a bunch of mic's and see which one compliments your voice the best. When I record vocals for myself or my clients, I always bring out about 5-6 different mic's and have them sing a verse. This warms them up a little and gives us an idea on which mic we should use.
From there, it's just about ALWAYS something cheap that wins. I can't use a Nuemann U-87 on myself unless I sing in the key of G. I've told this story 100 times...but it's true. Some mic's just do not compliment the voice that goes through them. This is why we have a wide array. For myself...you'll crack up, but out of all the killer mic's I have, I lean towards an old Equitek CAD E-200. I've had it for years, paid a little over $500 for it...and to this day, it's been a work-horse for me for my own vocals, clients, and acoustic guitars. I use lots of other mic's too, but that CAD works wonders for me personally and you can probably find one on Ebay cheap. Every person I have ever told about that mic that has bought one, has thanked me 20 times or more after they have it.
Also, someone made a comment about how your room can come into play using a mic. I'm not discrediting the person who said that, I just wanted to make a comment that it has NEVER been the case for me in all the years I've been recording. As a matter of fact, I can make any mic sound good on any voice in any room. With the right placement, right eq, right compression....it's really easy to make a mic work. However, the key is to hear something and just know it's "the golden mic" without tweaking your brains out. My point is...any mic will work as long as you know how to use it.
Rooms....this to me only comes into play if you record in a gymnasium. Even there, if you record the mic at close range, how much of that gym reverberation do you really think you will hear in a recording? Trust me...not as much as you think. I put up a test a few months ago with a few mic's in my studio at close and far ranges. One of the mic's was a Logitech mic that was in my web cam. It sounded almost the same as my SM 57 at a distance and was pretty close to the "up close" sound....it just lacked fidelity.
But the room/distance wasn't an issue at all. You won't need to worry about room artifacts until you get a foot away. Not many people I know sing a foot or more away unless they are singing back up vocals in a group. In that situation, you WANT a little room ambiance. But I honestly never worry about a room I'm in no matter what the situation. I got my start recording in the worst untuned rooms in existence. I know a little something about this. :) Again, I'm not trying to discredit anyone....I'm saying it's not been my experience and for a room to play a role, you gotta have some distance as well as room reflections that really make a difference before you need to worry.
That 421 they talked about is a real good all purpose mic. A bit high endy as spacealf mentioned...but nothing you can't deal with via low-pass. I use 421's on toms as well as on guitars coupled with SM 57's. Now THAT is a great combination for rock guitar. :)
-Danny