Hi I have flat panel 42 inch plasma from Hitachi and I just moved into my new place I am looking for a decently priced wall mount that allows to fit the tv in the corner of a wall between two walls.

I havent heard of any

You can get a cantilever mount from sanus or another brand, and mount the wall plate on one of the walls as close to the corner as possible. Then you can angle the tv into the corner.