TRW and Moog are all the same. In fact you just don't know what you are getting anymore these days regardless of what is on the box.
As for any sway bar end link, they take lubrication to survive. If you got a cheap one, chances are they don't have any grease in them! This also applies to those cheap grade tie rod ends and ball joints. Most often all you need to do to keep them working is grease them which is why they have grease fittings when the OE ones do not. The OE used teflon inserts and were sealed whereas the cheaper aftermarket ones are not sealed and have grease fittings. OE is better, but sometimes availability and cost are an issue.
As for them spinning, that's what impact guns are for.
Never had a problem going in or out on any of them.