If you get a couple of the lapped cutters, you can get a truly stupendous surface finish. I tend to buy them when Cutwel do one of their periodic offers like 30-40% off or 3 for 2. The downside is that they are razor sharp so you need to be very careful how you handle them(!).
https://www.cutwel.co.uk/milling-too...illing-cutters

I've only broken 2 cutters over the last year or so (not just due to being an armchair warrior) and in both cases it was due to recutting swarf. This was due to me not clearing the chips from the cutting zone. They ended up stir welding themselves to the (uncoated) tool and I don't think the surface treatment or absence of it would have made any difference. Now I use an air gun to blow them clear and the longer term solution is a HVLP spray gun pump (don't want / have a large compressor).