Streamlight Stinger HP mod led choices?

I have a Streamlight Stinger HP xenon. I know Terralux made an led upgrade for the regular stinger, but not this one, and that kit won’t fit this light. I found a mod on CPF in which a SSC P7 was used since this is a 3.6v light. Is this the best led for this one or are there any other emitters that would work better? I know a custom pill will have to be made, I’m good with that. I’m just wondering about the emitter. Thanks for the help.