I am going to be recording a live performance (not overly loud) in the outdoors. There will be some ambient noise, city hum etc. What mics do you recommend? I'm thinking cardioid to record mostly what is in front of the mics and minimize surrounding and distant noises, although I know I wont be able to eliminate them altogether. I've done some tests with a pair of Rode NT5s but I feel that I need better quality than they can provide.