i'm torn on this subject....i guess it depends on the cabinet you are putting it in. my first cabinet has a 19" LCD, it was a simple 2 player cabinet. i didn't build it, i used an empty cabinet i picked up cheap, it originally had a 19" arcade monitor, so the 19" fit well. you'd never get a 27" monitor in there. i later came across a 27" tv that i wanted to use in a cabinet. i was going to put in in a cut-corner dynamo cabinet, but i found that in a standard type cabinet, it felt too close, it was hard to focus on. i ended up putting it in a showcase cabinet and it worked out great. having played alot of arcade games recently, alot of them with large monitors seem to hurt my eyes when they are so close. so for a standard upright, i'd prefer a smaller monitor.