I have the 1.5kw 110 and 2.2kw 220. Both honestly work fine. I upgraded to the 220 mainly to take advantage of 1/2 inch bits… a 3 inch surfacing bit will make quick work of flattening slabs.
I bought a full conplement of 1/2 bits for general cnc use as well but honestly doubt ill ever get much use out of them on something the size of my journeyman. If I did full sheet goods we might be in business…