...what Simon said.
After finally tasting M4, would move Venus off my list and put M4 in its place. Wonderful tasting mango, large fruit, and seems easier and better to grow than Venus (from the accounts of others). Adding M4 to my collection. Very different from CC to me.
I'm keeping CC, Sugar Loaf, and M4 to spread out the season and add to flavor diversity. Yet to try SL, but hear they all are different despite being in the coconut flavor group.