I have both miau and the petkit (which appears to be on sale right now)

https://www.amazon.com/gp/product/B088TF8MTV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I like them both alternating.

The petkit is nice because it is transparent enough to see water level dropping. It also has a smart feature that will blink. I like it because it cycles and does not always pump. It has a filter change warn as well.

I like the miau because it has no filter needed, can be cleaned in the dishwasher easily. One thing I did not care for is that the ceramic will have hard water build up - this is not a problem any longer because i use bottled water for the cats now. I also like that you can order an electric eye and it turns on when the cats come near.