We"ll I'm glad you ask. First off FAE makes a quality head, craftsmanship is top notch. Secondly the liniage (sp) they all come from the same group of guys, meaning the originators all know each other or worked together at one time. Wierd huh!
Next I will go over your points
1. Sharpening. With carbides after 100 hours or less the tips round off and cannot cut clean with the ground. Therefore leaving sprigs everywhere and also affecting production because the cutting tool is dull. Yes we sharpen our blades usually once a day and it takes 20-30 min. Our heads cut the same everyday from the beginning till you change the blades. Dull carbide, oh well, only option is to change.
2. Second warranty. Well if I were doing half the work our heads are capable of then that works out. I can double the production and capacity by just swapping heads. I do it all the time. HP for HP on a demo I will flatout outwork a carbide equiped head.
3. Realibility. I have a DAH-150E (large excavator head) running on a 400hp tigercat here in Ga with over 6000 hrs on it and it works eveyday. Be happy to show you.
From my notes I have yet to see on average a FAE with more hours on a comperable heads of ours. Fecon yes, they are a little more common.
I am glad you are happy with your head and I hope it serves you well. But if you are happy don't come watch one of mine run because you just might change your mind.
Call me sometime. I like to watch good mulchers run and here your story. Later