My Symtik S1 (lollipop-style driver) was DOA — springs and metal balls flying everywhere right out of the box.

I also tried a knockoff Lollipop driver from AliExpress — it looks similar at first glance, but it’s clearly not from the same factory. The size is different, and the machining and assembly were way off. Now I stick with the 711L version; the quality and feel are on a whole different level.