I guess in a nutshell, with newer hardware comes upgraded software. I only have Fam14 games available to me on my G20 which I was advised to start out learning as much as I could at an affordable price. Best piece of advise for me!
So, having said that, Fam20 requires higher hardware requirements although you can “convert’ from Fam14 to Fam20 with boot chips, video card, OS, new diagnostic key, Ascent software, etc.
I think you get the picture. But with newer technologies come better games. I still think many of the slot machines don’t take full advantage of the graphic capabilities. With either Fam14 or Fam20, you still need to obtain games. I believe because there are more MLD, Trimlines, G20/G23 and they have been around longer than the Crystal line, there’s more information and resources out there.
There are are a number of members who frequent this board who could provide more information on this topic. This a rather basic comparison. And having gone through this myself just a few months ago, I’m really enjoying my G20.