I have read most of the thread about Xenon vs Krypton bulbs in a 6d mag and must say i had alot of trouble trying to decipher all the info so I thought I would ask my own question, I have a 6Dcell madlite and wish to jaz it up so I will put the Xenon bulb in (are there any better makes to use) when I can find one, so what are the best D size batteries to run ?