[Elecraft] I need a mic recommendation for K2 and FT-817

[Michael Bower N4NMR]

I am getting ready to order the SSB option for the K2 and will need a
microphone.  While I'm at it, I'd like to get a better microphone for my
FT-817.

Can anybody recommend (what a silly question on this list <grin>) a good
microphone that will work on both rigs and that is an improvement over the
stock mic on the 817?  For background, I do transport my rigs some so I
don't think I want a desk mic but I don't backpack any of them.

TIA

Michael N4NMR