Ubiquiti USG dying - replacement?

I've got a USG, cloud key, and several APs. My USG appears to be dying and I'm trying to figure out how to move forward.

Should I just replace it with another USG?

I'd like to replace it with a Dream Machine Pro and a friend recently did the same in their own environment and they love it.

Since I'm already invested in the Ubiquiti sphere, I'd prefer not to have to buy all new access points and such.

Any recommendations would be greatly appreciated.