I have owned 2 pros in the past. Currently have a premium. The pro is better value for the $, has slightly more flow, and is more reliable. The premium is much more of a mechanical marvel, though, and has a cooler coffin multiball start. Even little things like the spinners and lightshow make it feel more fleshed out. It depends on how you weight the strengths and weaknesses of each, but they are both great.

True on the lightshow, but it's not quite the same and you don't get the color changing inserts. I could take it or leave it on the hammer too, but it is a very neat effect when it smashes the ball through the playfield. The multiball start clears the coffin and the balls eject from the scoop instead of being autoplunged from the shooter lane. For the snake, you can also hit any lit snake shot to lower the jaw and light the snake just like the pro. If anything, this is one aspect where there is more flow on the premium because the jaw keeps some shots to the snake in play.

Yes, the arrow inserts are RGB. They light different colors for different awards during stacked modes/multiballs. I believe they are also used for building towards crank it up & seek and destroy, but I'm admittedly not too schooled on the details there yet. This is not to detract from the Pro, which is also a great game. Just pointing out some of the differences to consider.