There isn't an ultimate choice for arcade monitors unfortunately, although I haven't read very many Betson or Billabs complaints (the D9200 has a bad rep around here though). Just so you know, the Nieman multisync is not digital, and therefore not the best choice for a MAME cabinet if that's what you are going for. I've heard nothing but great things about the quality of their monitors though (Ken's recommendation really says something). Rick from Nieman Displays also mentioned a while back about the possible development of a Nieman's digital multisync. If that day ever happens, I think it is very possible that would be considered the U360 of arcade monitors for MAME cabinets.