You want to avoid precious metal fine wire plugs such as platinum and iridium in high performance engines because the fine wire has a tendancy to heat up and cause preignition. From what I have heard, AC Delco plugs are the most resistant to burning up in high compression engines. I've run all kinds of plugs and the only one that every gave me trouble was an NGK because of a cracked insulator. I don't associate this with the manufacturer, though. Someone probably dropped the plug while it was in the store.
Maybe you should consider a colder plug? You should also run non-projected tip plugs in high performance engines. Projected tip lugs give slightly better fuel efficiency, but the delicate ceramic insulator is stuck way out in the combustion chamber where it is subject to damage. You say you have to clean your plugs, though. Are they fouling or are they burning up? Fouled plugs could be an indication of too cold a plug, too rich a mixture, or oil consumption.