Actually. Besides generic JAMMA cabinets (most of which were actually once classics themselves). the BEST cabinets to MAME are vector games. Asteroids, Star Wars, and even TEMPEST!
You know why? Because there are two of those things with dead monitors for everyone that has a working one, and they ALL seem to have problematic boardsets.
Believe me there are not nearly enough working vector monitors for all the vector cabinets out there. If you have a non-working vector game, that is probably really your best bet for MAME. And someone with a working copy of the same game will be grateful for the spare parts.
Can you still find vector monitors that work to help fix up your vector. Yes, you can. But all you are doing is keeping that monitor out of someone elses cabinet.
Another thing. The main games people seem to cry over are also the most common games on earth. People cry over converted Ms. Pac cabinets, and then go out days later and rape some working dedicated "also ran" just for the monitor.
A few years ago I was winning an auction for nonworking B&W games for $1, when the seller cancelled the auction with an hour left. I asked him what was up. He said that he was just going to burn them instead, as it wasn't going to be worth the effort to sell them.
90 percent of those Dig Dugs, Pacs and Defenders aren't going anywhere anytime soon. If you REALLY want to save something. Then save a strange game. Better yet, save several of them. I have some common games, but then I also have a few RARE games as well. My Rare ones are Jack the Giantkiller (dedicated cocktail), Time Pilot (cocktailm which is uber rare, the upright is common), and I have 3 dedicated oddballs on the way, Radar Zone, The Amazing Maze Game, and Checkmate.
Save that weird stuff, everyone of them could theoretically be "the last one". Seriously. Most of those weird games had production runs under 500. While most Atari, Williams, and Midway stuff was 4000, 8000, and even 20,000 to 100,000 and up!