Finally got our hands on the 2018 MacBook Pro 15 inch 2.9GHz 6-core i9. In this article we compare it to the 2.6GHz i7 6-core. Plus we have partial results for the 2.2GHz 6-core i7.
I am still constantly surprised when the i9 turns out to be slower in certain tasks than the Core i7, though I shouldn’t be. Most users shouldn’t pay the i9 tax — the i7 will be plenty fast.