Fordman, this is just my opinion. HL puts so many fixtures in their/our units that I would not purchase just in case bulbs. Wait until they burn out and then do your search. Who knows, by the time you need them, technology may have zoomed to something even more high tech... or the price will have lowered or, or, or. Besides, when the bulb finally does burn out, if you're like me the first question will be... now where did I put the replacements bulbs I bought... JMO