I'm looking at external monitors to use together with a new MBP (13"). I'm puzzled that Apple's 24" monitor is so much more expensive than what I'm seeing elsewhere. For example, Amazon has other brands of 24" monitors for about $200. What am I missing? Is there something about Apple's version that justifies this price? Or will I do just as well with another brand? Thanks in advance for any thoughts or advice you may have! Abe Z.