Hi
I replaced both of mine with Blueprint items, about £160.00 a side in 2014.
It was a while ago but I remember that I found a manufacturing code on them which indicated they were OEM.
40,000 miles later they are fine.
1 was worn, the same symptoms as you describe.
Frustratingly the other side was fine, the remaining noise that I was trying to eliminate was from the tyres - Dunlops sports.
A change to Michelin tyres solved that.
ScottC