Hi I'm new to WDC and relatively new to photography. I've been let down by my point and shoot with it's lack of options and ability. I am looking for a camera with interchangeable lenses, it needs to have good fps for sports, a good range of apertures. It must be capable of shooting in low light with little noise. The top range of my budget is around 400 for body and one lens.

I know this is a tall order but would anyone be able to advise me on any cameras that fit the bill?! Thanks