It doesn't pay to cheap out, especially on a device which will store private keys of hundreds or even thousands dollars worth of crypto. So far, I have used only TREZOR One & T, Ledger Nano S and OpenDime. When it comes to money, I don't want to risk it by choosing an unknown brand, but there are people who are looking for distinguishing features such as micro sd slot, e-ink screen, small size etc. Some people prefer convenience over security.
I'm not knocking the list. This is a useful thread indeed. 
I am consistently amazed at how ready people are to throw money and trust at things they basically know nothing about. 
Holes keep popping up with Trezor and Ledger and they have the funds and the incentive to address them. I wonder if any of these less known machines will even be aware of potential problems considering how few people will be picking them apart.