I'm definitely interesting in the Top Gun, but checked the Wiki for the links... are they out of business? Where do you get them, from Divemaster? Fozzy, sorry to be a little dense in this regard, but you said they work with all monitors, not just LCD? I'm going to also have either an S-Video or RCA connected monitor (tv).
And the Guncons, they all seem to be with PS2/PS3... I'm assuming the PS3 version is a USB connection, that'll work with Mame...?
Again, sorry, I'm totally ignorant with light guns.