Howdy,
I LOVE my 550B!! Just getting into CAS. Have one Vaquero on order that I pick up next week, (10 day wait), but have already received my dies, caliber conversion,etc. Already have some .38 special loaded up for a gun I don't even have yet!!
Dillon's customer service is what makes them in my opinion. I believe their warranty policy is 100% coverage. I have yet to hear of someone that has contacted Dillon regarding a warranty item and not received it for free.
Take care,
Buck