My Honest opinion-

Myri does not have the option to change to another background, that's a no for me, l mostly enjoy using black whenever the option is available.

Pnnv I can definitely use because of the background option and the multiple fiat option, I noticed among the rest, pnnv is the only one with more than 2 fiat option. I would like to see more fiat included in future.

Looks familiar, only two fiat option and ui a bit rough

They both open same Website link, am not sure why that is.