I'd say if you're really going for the multisig/psbt feature, go for the passport. Using microSD cards is super cumbersome and CC's open source grifting isn't something I would support. If not, I'd suggest taking a look at the BitBox02.
You might want to look into Anti-Klepto rather than "airgapped", which fixes actual security issues compared to made up security benefits.
(Disclosure: I'm working at BitBox)
I like the anti-klepto thing (which I also hadn't heard of) because it makes it very clear that this whole "trustless" issue is a matter of degree. It would be nice if people understood this better.
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Thanks, I'll check it out. Haven't heard of anti-klepto before, sounds like I got some reading to do.
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