You wont get on-camera XLR at


You wont get on-camera XLR at that price, but you could use adapters. For $275, the 

Canon 8GB VIXIA HF R50 Full HD Camcorder has a mic input. I reccomend upgrading to the Sony a58. It goes for $399 with a lens. This is really more of a DSLR/Mirrorless (an SLT, actually), but if you're willing to accept the DSLR form factor, you will get so much more

Finally, if you are okay with an action camera, the Drift HD Ghost has a mic input, and is waterproof, shockproof, and everything-else-proof. It's around $220

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