I have a behringer omni ECM8000 RTA mic that might work well. I will have to feed it phantom power.
The ECM 8000 is a small diaphragm omni-directional condenser.
It's not a great mic, but it is the perfect type of mic for the task you describe.
It has some self-noise and can distort if overdriven. Before you buy anything you should give it a test.