I will agree with others about how well the Shimano ice tech rotors works. They are worthy of all the praise.

Seems like all the new fancy road rotors are center lock. 6 bolt seems to be mostly MTB at this point.

Aesthetically speaking I think the SM-RT900 Dura Ace rotors look the best. Also, the large heat syncs really reduce the rotor temperatures while descending on my bike. $60 each isn't terrible but certainly isn't budget friendly.

https://www.jensonusa.com/Shimano-Du...EaAlJqEALw_wcB

A new rotor for the Sram AXS system comes in 6 bolt, but it's a mere $80. The standard version is a few bucks less.

https://www.worldwidecyclery.com/pro...EaAhD9EALw_wcB