Seconded. I have snes x6, gba mini, gbc, and 64x7. They all work great. Mine were picky about which SD card I used but once setup, they have been excellent.

Getting the save setup figured out on the n64 cart was a little weird especially adding in the Analogue 3d to the mix but once I figured out the cart sizes its been fine. I just save everything onto the everdrive now.

I 100% recommend them. The support from Krikizz is excellent to boot.