I've had this ballhead for 10-11 years. I don't baby my gear as my end goal is the photos and if the gear has to take a hit to get them, so be it. This ballhead has been on 6 continents, strapped to a snow machine for 6 months in Antarctica, tossed around for a month in the back of a Russian jeep in Asia. And, it worked then and now, the same as when I bought it!!
I am not sponsored by Acratech. I had to pay for this ball head the same as anyone else. And if I give up my hard earned money, I want the product to work. I can say without reservation that this is some of the best money I have ever spent. I exclusively use the Acratech head in the field and am very glad I tried it.
The rubberized knob I just received makes a great product even better. I currently have several other ballheads and am I selling them all. They do not compare to the Ultimate Ballhead. The more I use it the more it exceeds my expectations.