junk the soundcard,,, it would be better used as a paper weight than a recording device. In the gamer world you have the best card out. In the recording world, you have the worst thing since Hitler!
I agree with the guy above as saying stay kinda cheap until you get used to it, but SB live is really bad.
I would suggest a card by Midiman/Maudio
www.midiman.com 2 or 4 channels will probibly do ya,, I would suggest the delta44/ or delta 66. The omni Studio has decent mic amps built into it. But more expensive. Go to ebay first you will get a good price usually half off the retail price.
As far as the mic and micpre, its not sooo much as ones better than the other , it is which one's sound will go with your tone the best. I am not sure what kinda sound your after , but when you said that your voice sounded like fabulous, and talking about beats, I assume your going to be recording hip/hop. Hip/Hop is a little differant that rock, in the aspect that the Mic preamp is very important.
Rap artist are extremly dependent on the vocal quality, as your probibly already know. When I listen to Eminiems first album, his vocals sound a little thin , and weak. Now I listen to his newest album and the vocals are totally differant. Its got a BIG sound, a full rich and warmer sound than long ago. Thats probibly due to better equipment. And mastering.
R Kelly's Newest album is the same story, when you hear these guys live , there voice is kinda dissappointing. Because the Mic Preamps they use in the studio, are soooo much better than the ones they use in live concert.
You might not want to go all out on the card , But you might want to spend some money on a good preamp.
If you want to have that BIG sound to your vocals, then you will probibly want to spend some of that money your bragging about on a good mic preamp.
To get a good Idea on what kinda of sound some of these expensive mics, and pre amps have. Listen first hand and go to the website
www.thelisteningsessions.com and hear the test they have done on all kinds of good mics and mic preamps.
Good luck and happy hunting