Laser War is a fun game with one heck of a light show for a game of its era. It was one of our first machines - I have almost sold it a half a dozen times and it keeps making it back into the collection before I list it for sale.
Pin-Bot and most system 11 machines are still way better machines then most people think and most are way under priced (but they are slowly catching up). Lots of Data East are the same way.
Shaq Attack - dollar per dollar one of the best deals in pinball.
Raven, Spring Break & Hard Bodies - get past the art work on those and they are all pretty decent machines for cheap. Not great titles but good machines that can still be bought for under $500
Bottom line is there are a ton on non DMD machines that are a great bang for your buck. I know a lot of people only look at DMD machines when talking about machines but dollar for dollar Data East and Williams System 11 machines are a better deal even with the current prices up on most of these now.
3 or 4 years ago I started buying every System 11 and Data East machine I could pick up at a reasonable price. I just didn't get why people were fighting over of the top 50 or so titles driving prices up to near crazy when I could buy 8 or 10 great System 11 machines for less than they we paying for one "A" list title.
The way I see it 80 to 90 % of pinball machines are pretty good if you give them a chance. There are a few dogs and a few that just don't have long term stay power in a collection. But I have only played a handful of machines I wouldn't love to own and most of those were likely crossed off my want list because I played them when they were not properly dialed in.
One mistake we made early on is playing machines that were not set up properly or "dialed in" and forming an opinion about them before we gave them a chance. NEVER play a title once that isn't 100% and decide if you like it. Be sure to play that same title properly dialed in and give it a chance before taking it off your want list.
A bad day of playing so-so machines is still better than a good day at work!