Its not the camera it's the light. Any current video camera would be fine. I like Canon so
http://www.bhphotovideo.com/c/produc..._M30_Dual.html
If you want to go up budget the first breakpoint is cameras with a socket for a mic - get the mic off the camera to avoid you heavy breathing and all the handling donks on the sound.
But you need more light. These fluoros are dirt cheap now on ebay and good for newbies as they don't get hot so won't set the curtains on fire. Two or three would work. They aren't super bright but will add just enough to boost whatever is in the room already and look kinda natural.
101 of lighting.
One in each corner of the room, except the corner behind the model. Lights, just over head height and pointing at the model.
Take a white balance off the ceiling (assuming its white) Do not use AWB.
Spend the other 5k on models.
Build a site.
Locate Porsche dealership.