There's a lot of hate out there for this monitor, but if you have the right hardware to hook it up then it's a fantastic unit.
First off, don't even try to hook this thing directly to a CGA feed from your cabinet. Get yourself the latest Gonbes 8200 and feed a VGA cable from that board into the monitor.
Second, get yourself a scanline generator. The SLG3000 is good but I got a cheap one off Amazon that works just fine.
With those two pieces of additional hardware in the mix I got my Gauntlet Legends looking real good on this monitor. I'd give it 5 stars if the two boards above weren't needed and the monitor's firmware was able to handle it all. Nonetheless, I'm pleased with this purchase and hope others can use my suggestions above to bring their old worn out CRT arcades back to life.