If they are made in the U.S. then they are Personnas. I started out with the ones in the store then started buying in bulk from ebay. The cost of 20 in the store is about the cost of 100 in bulk. They dont come in packaging just the plastic holders. Some have claimed these are factory seconds or rejects but I havent had any issues.@Rich_C makes a good point. With the Trac II and clones, there is really nothing to wear out or break with the handles because there's no pivot. I just used some store-brand Trac II carts that I believe were Personnas and they were quite good.
A quality metal vintage Atra handle wont wear out either. I have one I have been using for 35 years.