Main difference is one is a bed slinger and the other is in a cabinet for higher temperature filament, but you can do higher temperature filament on the 3V3 but might need a cabinet to stop draughts. What are you wanting to print? PLA/PETG/TPU the 3V3 is more than good enough. Bedslingers need more lateral space for the bed to move. I have a 350x350 buildplate bedslinger and you will need about 700mm of space to site it.
I bought it for PETG and ABS/ASA and have not been able to get a decent print out of the K1C while the V3 churns out print after print just fine, granted on PLA.
Seriously considering returning it. I thought it would be better - falling for their marketing “Flagship printer” BS.
250 tip and 70 Bed seems to work better than 255/80 on the PETG but it still has adhesion issues on the textured PEI plate and stringing.
More than likely I just need to spend more time getting it dialed in.
What I find with PETG is getting the flowrate right. Also find that some brands are better than others. I prefer Pinuotu on my machines, almost no stringing. Changed to Tecbear and had to adjust the flowrate lower to get good results.
I print ABS and ASA all the time on my K1C. That’s the primary reason I upgraded to it and it hasn’t disappointed in that regard. My previous printer was a bed slinger, and I like the K1C SOOOOO much better.
Might not be any help but I have found that both PETG and ABS I am printing the first layer at 120% flowrate and subsequent layers at 90%, great prints. I would like to know of a way of doing that in the slicer rather than manually adjusting the flowrate.