My daughter has been skating on a traditional Coro Ace for a few years and I am just switching her to the MK Pro Revolution. The skates should be here next week - happy to update you and let you know how she likes them! I've read great things about them, and the shop we ordered them from (sharper edge, spoke with Jon) said they prefer the MK Pro over the Coro Ace in general. So there's that, for what it's worth.
I know DD's new coach really prefers the MK Pro over the Coro Ace as well, hence the switch. My understanding is that the blades are very similar to each other.