If you want a really good, but inexpensive mic, I recommend the Sterling Audio ST51. It's $100 and I've gotten really good results with it. And every review I've read was a positive one. Just my 2 cents.
No matter what mic you get, let me say make sure you get a shock mount and Pop-Filter along with it. Those 2 accessories really make a difference. Especially a good Pop-Filter.
Good luck with your quest!