We’ve been using Hansen Hobbies for about 3 years now.
I have never had any issues, except once when shipping was delayed for a few days. We use the economy crimper, it works fine.
We have found though, that unless you really need or want something custom, or are really strapped financially, it’s easier to just buy the pre-made ones.
We do make our own custom ones as needed, or in a pinch when we need one and don’t have one.