Ive used the opener kits from Rockler, and have always felt the product was heavy duty and well made. The kits from PSI are much more cost friendly, especially the more you buy. Anyone have experience with both that could compare the 2? I hate to spend money on something to save money, if the result will be an inferior product. Any other resources out there for similar product? Im referring to the thread on type, not the ones that feed the whole way through the handle like a pen. Thanks.