I have 2 of the kobra s1 combos and the first one I bought from a retailer. I give 1 star for the first one and 5 for the second one. the first one broke in the first 5minutes into the calibration lol. (hotend cover cracked and fell also the fan cable broke) Second one 5 stars bought straight from anycubic and works like a charm.

Printer is perfect but i get -1 star because speed of filament change is slow.

I like the all in one combo, also that everything is in 1 box. Simple to install. And easy to use.