Depending on which type you want, I recommend talking to Finsky.
He has a couple of great models which are working for what I use them to do and he is resourceful. He has also been working with some big players and that will offer more opportunities.
I also like my whips. If you have access to cheap or free 10 gauge wire and connectors at cost you cannot beat the price
I have a few more cables to route, but it is also flexible, literally.
Seriously though, talk to Finsky on the PDU sources he has. The prices are great, and I don't want to mess with anything less than 50 AMPS on a PDU. It simply does not take many power supplies > miners to use that amount of amperage. Especially talking 2880s or DSP2000s.
Good Luck