As I said....... the heads are getting new guides....... so recutting the seats would be mandatory(at my shop anyway), and I would use whatever cutter I felt would provide a balance of flow enhancement along with decent durability.

Generally, intakes get 4 angles, exhaust 2 angles and a radius.

I don’t think I’ve ever had a set of new MP heads that I let out the door with the as delivered valve job.