Sony C-800G by Chris Lago
The C-800G is an incredible microphone and has become a favorite among professional recording artists. the sound is crystal clear, the bass is huge (especially in cardioid) and the high end frequency is incredible, very sparkly.
Nevertheless, it is not a microphone for everyone. The mic is so detailed that it can hurt a singer's performance if they aren't incredible singers, and can accentuate the wrong frequencies as well. Also, I have heard that there can be hum problems with the power supply (never had that problem) and the tubes are expensive and don't last long at all.
The microphone is great for male/female singers as well as rappers. It's used on a ton of hit songs and has become an industry standard. The price is ridiculously high, but well worth it if you have a critical session with a talented singer.