I think the main reason is because I am not a production shop, and can easily swap the blades when they become dull (and don't mind the extra volume of chips)
I can keep two sets of blades, one for the rough milling and one for the final path and get slightly better finish compare to Xylent.
Another think made me change is the angle of attack. The Xylent cutter head are perpendicular to the wood, so knots in the wood still give some tearout (the Felder one comes at an angle, which can reduce the tearout)
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