So, first things first: what games are you going to play? Actual examples would be good, because you make it sound like you plan to play console games and that can make a really big difference if you want to play 5th gen or newer. You also need to understand that there's different resolutions of arcade games. Most will be low-res CGA, a few will be medium res, and a few will be higher res. If you just want to pick a good all-around tube, pick a CGA tube. If you have loads of cash, pick a tri-sync that can do all 3.