These were the last GOOD Mediasonic devices. I have two of the 8bay USB3/eSATA myself. They worked great for a long time (as long as you didn't look at the eSATA cable funny, those things are loose af).
Unfortunately, when I followed up with the Mediasonic USB3.1gen2 Type C 8bay my endorsement ends. Hard. With prejudice.
If you are a Tru/FreeNAS user (note: I tried debian TruNAS and bsd FreeNAS so I will refer to both, they had the same problems), you are going to have a bad day. Mediasonic did something fucked up with the internal SATA connections where only FOUR of the eight drives will show up in Tru/FreeNAS. I went back to the amazon review page and some other guy had nearly the exact same issue I did. Tru/FreeNAS only show half the drives.
But, this story has a happy ending. CHIA got popular, this device was out of stock everywhere, and I unloaded mine on eBay for more than what I paid for it.