I'm trying to find the best 20" CRT for hardcore graphics use, keeping the price under $500. 21-22" is too big. Do NOT suggest LCDs. I don't want one, sorry I'm interested in the Trinitrons or Diamondtrons but I'm worried about those 2 lines across the screen. Are there any manufacturers that make those that don't have the 2 lines or is that just they way it is? Anything as flat as those or comparable? The monitor must be PC and Mac compatible. Thank you for any help!