What's different between the Rovyvon A5x and A8x?

I have an A8U I think and I’m going to upgrade soon… I’m wondering what the difference is between the A5x and the A8x?

Both seem to have the transparent GITD case, an option for a Nichia, same battery life, an option for a UV… so I’m a bit confused.

A5

- GITD case

  • 2 colors for side LEDs

A8

- no GITD case

  • 3 colors for side LEDs

Thank you. I thought they both had the GITD case. Seems I was mistaken.