Think of the average consumer here, not the crypto-electro-engineer in her microcomputer lab.
Why choose?
I'd agree, but OP is looking to make a choice for a website.
You're evading the question. OP has already gathered the information they sought and has settled on "satoshi".
Again, why do you choose between alienating "common people" (with "μBTC = microbitcoins") and alienating "crypto-electro-engineers" (with "bits") when you can accommodate both so easily with "mikes"?