I hope the f(x)'s keyboard will be less stiff than the N950's - it always to me felt that the force needed to open the N950 would make it spring forwards out of my hands onto the floor in front of me, and that when closing, it would always risk "biting" my hand slamming shut. The N900, while clunkier, you naturally had a firmer grip on and it didn't have any spring to throw its own centre of gravity around.