I tend toward more often assisting others with their component replacements, rather than messing with my own.
Last night I re-jigged a rig to run dual-loop cooling, so installed a bay res and new tubing... before deciding it was a pile of useless cack and ripping it all out, replacing one of the 360 rads with another brand, chucking the bay res, adding three more Corsair ML Pro fans, swapping compression fittings and re-laying the lines.
It's quieter.
Don't think it's going to be desperately better on the cooling, though. But not my rig, not my problem. I built what was asked.