The resolution is a bit different on the mono 4k it’s screen is 3,840 x 2,400. The m3 screen is  4,096 x 2,560 do the m3 is a bit sharper. The um is a but different I believe the mono 4k is 35um and the m3 is 40um, but honestly the m3 looks a little sharper espically when you use craftsman resin

Since the screen size is smaller on the 4K but the resolution is the same, we can say that the printing resolution is actually higher on the 4k than on the 3M… So that wouldn’t be a deciding factor for me… On the other hand, the bigger building volume is a benefit for the M3, what kind of parts are you planning to print? Do you need that little extra volume?

Hey burak honestly I’d go with the M3 the bigger build volume and higher resolution screen are more then worth the 70 over the mono 4k

Hey gBill, of your new to sla printing the only real flaws is the handling of resin, making sure not to go over rhe max fill line, making sure the bed is good and level, and then the draining of the vat of your not careful you can have quite a mess. But as long as you take your time with everything it’s super easy to get up and going.
As for supports I tend to use the stock settings and auto supports and then manually add more supports as auto can miss points. It really depends on the model as well if I use light,medium or heavy supports.

Is there a good set of support settings you found, or is it model-specific?