My experiences have all been good after installing the cutter head almost a year (?) ago, at least it seems like a long time ago.
No ridges, deep scallopes, less load on the motor, no tearout in figured woods, better chip control and MUCH LESS noise. The Byrd head makes a good tool even better and did I say that it is remarkably quieter than the knife cutter head.
There are other cutter heads that use a similar but not interchangable insert (the Grizzly head for example in my jointer), mixing brands of inserts by you or the people that sold the cutter head to you could give very surprising results.
gary