So far pretty great! Split is great, I wish there was a better way to connect the two halfs, the extra cable clutters up my desk. Solid build quality, pretty heavy. The keycaps are already getting a bit shiny after just a couple weeks of use, which is disappointing. I went with the brown switches that have a very subtle tactile bump, but are actually much quieter than the liners I had on my k4. The two knobs are great, but I only end up using the right one 90% of the time. Macro buttons are super useful, I wish 8 could find a nice relegendable keycap for them though. Overall about a 8/10.