My son who is 12 has gotten into collecting old Nintendo. Just the other day, I managed to find one of the consumer CRT holy grails on our local equivalent of Craigslist. A B&O MX4200. It's one of the last CRTs that B&O made from the mid 00s. It has an excellent picture, nice onscreen menus for calibrating the tube, and supports NTSC over composite so he can connect his early 80s Famicom that's been modded for composite out.