He's not going to get much better results with an HMC150 over an FX1000 (although I'm a panasonic guy myself).
OP, why the hell do you need shallow DOF for filming skiing? SUre it's pretty, but I highly suggest you continue to focus on devoloping skills further and further instead of trying to be "on top" of technology. You will NEVER be ontop of technology.
Hell, buying a book on composition and lighting will make you a better filmer than buying an AF100, or even a RED epic will. Take a step back ans think about WHY you "need" a camera with a single large sensor. You don't.
"it sucks knowing your dick is longer than the base depth at your local mountain." -bailiff