Had my Z9 mini 2 days ago and have been on PH that seems to work.

I just noticed Mining Dutch has added Equihash switch pool so I've just changed over to give it a go.

This is newly added currently with 6 coins on the pool so will need to wait for hashrate to build up the.

stratum+tcp://equihash.mining-dutch.nl:6663

Just need to register an account on their site.

https://www.mining-dutch.nl/

I've been on Mining Dutch with my Baikal X10 since last year and their switching is very good as well as the option to choose the coin you want to payout in. Well they even provide an algo switching software for the X10 to maximise your earnings.