This is very nearly the perfect modern arcade cabinet

This cab isn’t cheap (you could buy two Arcade 1Ups for the same price), but what you get is impressive: the game selection is solid and you can play titles the way they were originally designed, while the system’s extensibility ensures longevity. When you’re causing carnage in (a sideloaded) Robotron with two joysticks or using the trackball to zoom around in Millipede, you’ll be smitten.