to recommend any mic one needs to know how much you are willing to spend!
decent stereo mics for your application would be the AT822, the Rode NT-4, the Sennheiser K6 modular system mic, as they
- are housed into one body which allow to be mounted to the cam with a shockmount
- run by internal battery so you won't need phantom power supply
the Sennheiser is the most expensive one and has the advantage of interchangeable capsules. ( cardioid, omnis )
There are different shockmounts for mics with different diameters, I use the AT8410a with my AT822 and love it!