2012 (Maybe 2011?) Kahuna K1000s, were top of the range back then, and still going strong! Tried other pads, but none fit quite as nicely or protect as well. They're not the lightest, but I can have a tendency to miss full tosses at my legs, so best to have top protection. Had Ice Sub Zeros before that, which fit even better from memory, but the issue was that the straps were just far too long!
I've tried some very light pads, (<700g each) and they just didn't feel right. Most are too bulky. I'd be interested to try out the Aero ones though, they don't look amazing, but function wise, they definitely offer something pretty unique and very practical on paper.