I will definitely consider using a Trezor. I have been a bit reluctant since I am not sure what happens if it breaks and they go out of business, but I presume the private keys can be recovered from the seed without a Trezor. I also have to convince myself that somebody getting hold of both my laptop (with the watch-only wallet) and the Trezor cannot spend the funds.
You might want to also consider the Ledger Wallet. I too was concerned about the what-if's of it breaking or becoming damaged. I solved the problem by ordering 2 of them and just keeping one as a backup. At about $15-17 USD (for the HW.1 version) it's one of the best investments I've made in my Bitcoin endeavor. Also Coin Center was doing a give-away on the Ledger HW.1 a few months ago and I was one of the lucky winners so now I have 3 HW.1's
