Is a Tri Sync monitor really needed for Mame and retro consoles? As from say NES up to PS2 consoles all games were 15kHz and a few 24khz based. There isn't a great deal of Mame roms that are 31khz is there?, I can understand the need for 31khz monitor if you would be playing vertical games that have been rotated by software for a horizontal display, but other than that wouldn't a single or dual (15/24khz) sync monitor be the best bet?