I used to have a dozen or more of the G&W but they ended up just sitting and I parted off most of it. I'm holding onto a SMB, the Club Nintendo Ball, and I have a tabletop Popeye I recently found locally and sort of fits a Nelsonic Zelda watch. I do have a pair of orphan manuals for DK2 and Mario Bros but I'm trying to get them to someone who needs those. While not entirely the same family though DK Jr overlaps I do have Coleco tabletops for Pac-Man and Donkey Kong w/manual plus the perma power pack to plug it into the wall. The problem is with those G&W is that most of them are just too expensive for what you get out of them as most are mindless point racking games with very few motions to it, but some like SMB, Zelda, Climber, Gold Gliff and a few others there's a good adventure to roll through but those can get into the high two figures into 3 figures just for a semi-decent stand alone toy.
Now Tiger games, those I have a selection of those. I've got Afterburner, Battletoads, Baseball, Castlevania II w/manual, Karnov w/manual, Mega Man II, Street Fighter II, Sub Wars, and then both of their later pinball line of Pinbot and Attack From Mars. I have a blister pack sealed Star Wars Imperial Assault still with this cool attachable Vader joystick.
I've had a few others in the past but that's the most I've had at one time. I got a thing for old LED/LCD games so I keep some around, the oldest being some Mattel late 70s handhelds like Armor Attack (complete in box) and Hockey, but also a complete in box Wildfire Pinball too.
The up side to the Tiger games is that they're more or less fairly universally cheap where they can be had for like $10 shipped on ebay, sometimes less, and some go more near $20, but rare is it to find yourself paying higher than that unless it's just dumb people behavior who don't research before buying. Castlevania SOTN's Tiger mutilation is the only one I can recall people willingly will pay $50+ for. The problem is a lot of them really do suck, and a good many more are fairly average. Usually those based upon NES/Arcade license aren't half bad but some take large liberties with the material. The stuff I've kept is actually pretty decent.