I'm so hooked on my new MBA I can't stop using it as my main pc ... the HP desktop and the T500 is collecting dust... There will come a point when I want to hook up to an external monitor ... I looked at the 24" ACD's today I was surprised how large the screen was. Does anyone use the 24" ACD as a main monitor for typing, designing email, surfing etc, do you use it on a desk or sit far away from it. Even the Apple rep in the store said it's best to be 4 or 5' back from the 24" and recommended the 20" ... I'm thinking the 24" is a little big to have on a desk and sit close to as a main monitor. Any thought's/opinions appreciated.