Condenser, dynamic, omni-directional, large diaphragm, small diaphragm, phantom power, pre-amps? What do you need, what is best? Well there really isn’t a clear answer, but here is a tutorial over at Transom.org to help you decide.
I personally have a Shure PG58 Dynamic Microphone and an MXL 2003 Condenser. I really like the MXL 2003, great mic, good price. Good luck on your decision, it’s one of the most critical!