I bought the K2 combo. Great so far!
I bought the K2 combo as my first 3D printer. So far, I am very happy with it. I’ve only used the Ultra-PLA from Creality. I have ordered some other filaments to try and will see how well they work. The multi feeder was a little tricky to get it set-up and working. For the price, I am happy with it and may purchase the K2pro in the near future with a couple more multi-feeders