Had a Katsukity card for ~1 year even though all the feedback I had read was that their cards don't live long. Treated my 3DS and capture card better than I treat anything, it still died. I assumed it was the USB output since it was having signal issues. A fellow streamer recommended Merki.net so I checked it out. All the pricing and instructions were very up front and clear. Shipped out my 3ds, turns out the issue was something different. Either way the 3DS was repaired and returned very quickly even though I messed up on some of the shipping instructions. Included in the shipped box was some candy and a fresh, and very strong, usb cable.
10/10, would recommend.