Some of the designs looks really cool. But the question is: do we really need them? I think they are pretty neat gadget but you don't really hardware wallet for anything you couldn't achieve without it.
You can buy it only if you like the awesome look of the device. I can be safe with standard offline, paper wallet...
I have bad luck with paper. Cats pee on it, children eat it, and it catches on fire easy. If you have bad luck like me then a HW wallet is great. Ledger has a cheap one, I think it is $15, it is basically the same as their more expensive model with less shiny stuff.
I think the ledger blue looks sexy, and the Mycelium has the best slogan ever. Maybe they are not for everyone, but I really like HW wallets.