I use a Mediasonic 4-bay SATA enclosure here, with USB3 and eSATA connectivity. They also have USB-C versions, which are are more than quick enough for four mechanical drives.

Lately, I'm finding their eSATA to be less than reliable though -- I doubt they test it very well. Their USB3 is now rock solid, so I've switched to using it and things are good.

The two major issues with MediaSonic enclosures:

1. They use a "soft" power-on button. So from the factory there is no way for these to automatically power-up again after a power failure. I have rewired mine to a software controlled relay, so I can start/stop them under software control.

2. No firmware updates after it ships from the factory. And they tend to use firmware that is limited to the current largest size drives on the market.. so when larger drives become available, they often prove incompatible with that version of the enclosure. This is why I always used eSATA until recently, because there's no firmware to get in the way then. I just don't know why it stopped being reliable.

Cheers