I don’t have experience with the Creality K1, but I got the Sovol SV07 as a birthday present to myself, and it’s also a Klipper-based printer.
The reviews on the SV07 were mixed, but I got it to replace an Ender 3 that I had highly modified and I LOVE it by comparison— I print exclusively in PLA at home, and literally everything about it has been way less of a pain in the butt than the Ender 3. I backed off the max speeds it can do just a bit so I hopefully won’t have to replace belts and wheels and stuff so soon (… that will probably happen anyway though… lol I wish I had gotten the SV06 and upgraded it to Klipper, but oh well), but it lives up to it’s speed claims, and I absolutely love the bed leveling tools in the fluidd/klipper software.
It’s no Bambu, but for $300 it’s great. The only ‘negative’ so far was that I had installed a silent motherboard on the Ender 3, so the fans on the SV07 make it louder, but it’s not irritating or anything. It doesn’t have an enclosure built in like the K1. Lol, it’s so new though, that if I want something for it, I have to make it myself— calibration guides have to be updated, I had to make my own profile on my Mac version of Cura, etc etc. It’s been worth it though— I haven’t run into anything I’ve had trouble printing yet.