I just put on Bosch Plat+4s and Kingsborne 8mm last week, if anyone is debating brands, dpn't be scared of these. Cured my rough idle, it feels like I'm driving a new truck. (Aside from the ever present rover tick.)
Plus the blue wires look nice in the engine bay I had none of the rumored problems getting bigger 8mm wires into the 7mm retainer clips, they popped right in.

 

Good news on the retainers, I have a set of Kingsborne waiting for me to install. Did a crankshaft sensor replacement this past weekend, working up to this next job.