I've got rechargeable AAs and over the past year, almost all of them have started to sweat, and at least corrode some of the charger contacts. Is it smarter to keep using rechargables and simply be prepared to buy a new charger every year, or switch back to Duracells/Energizers and call it a day? Will the high-end alkalines still sweat? I'd go lithium, but my really good flash can't handle lithium batteries (per manufacturer), so that's not an option.