I love my trezor
The multiple wallets makes it easy to only show how much I want
This makes it great for not letting the wife know the true amount of coins I have (just in case hehehe)
but its also great for in person trades. We can agree on the amount before hand, say 2.5 btc, I load that amount into a newly created wallet, meet up, load up that wallet and again no one knows my true holdings.