The 17-inchers are NOT a delight to carry around, at 3-6kg they put you down. Also the big screen takes more battery. And no LCD screens have refresh rates of 75Hz They're all about 60Hz.- display size: This is not too important for me, something better or equal than 16" should be enough I guess (I'm on a 17" for a desktop system atm, so I'm used to this size )
- display refresh rate: > 75 Hz
Also powerful laptops are usually noisier than desktops, they have smaller fans.
The price range.. I'd say about 1200e, dunno about US prices