I rate the nitron spherical bearings. Had them fitted since about 2010 and not had any trouble. Great on both the road and track. (Even when riding the kerbs) They simply just do the job and are reliable.
Depending on use OEMs are good and need less servicing.
Most if the others need regular dismantling/ lubrication if not they seize up with expensive consequences…Trust Me .I Know.
I installed the nitron bushes and found no downside to them.
Positive feedback and no harshness.
I would guess everyone has a positive opinion about whatever they’ve fitted. I just thought the cost of going bearings over bushes …Daves or whoever’s was very small over the whole scheme of a suspension refresh.