^ I would like to think mine is more solid cause at least there is a metal screw as the core and the bumpstop has metal backing.
However, I never got the one off of ebay so I can't say for sure which one is more solid. I do a lot of home improvement stuff so I see/work with these parts all the time and I can't justify paying $20 (after shipping) for the ebay one when I can easily make my own for < 1/4 of the price. I know everybody's value is different but also I like to tinker and make my own stuff so that add some more satification to it. cheers.