I put Wilson Combat ambidextrous extended thumb safeties on both of my Springfields. Part #192S (S for stainless). They look great and function fine. They cost about $50.00-$55.00.
I'd recomend having a gunsmith install the unit, as it requires carefull fitting.
I don't know if they are more durable or reliable than other units, but they are well made and close to an exact match for the factory safety in size and appearance.