If given only two choices above, I would take Conrad. Especially if you have status with Hilton (upgrade and free breakfast). I have stayed at both, plus Marriott, Shangri-la (HK and Kowloon), Renaissance (HK and Kowloon), Sheraton, Peninsula ...etc. All have great view BUT the bestest most spectacular one goes to The Intercontinental. My all time favourite hotel in the world, so far.