It's really hard to choose the best home studio mic if you are on a tight budget.
Witch of the following is the best?
MXL 990, Behringer C1, M-Audio Nova, AT2020, Shure KSM27
I really like AT2020 and M-Audio Nova. Both are under $100, and with a proper audio interface and an advanced mixing, you'll be able to record vocals comparable with mics that costs around $1000. Remember, a condenser mic requires a preamp with phantom power.
You can find all these mics on here.