If u were to choose to buy trezor or use armory which would u rather have? Not to worried about the purchase of trezor as I like the concept. I also have a comp for armory too. If something went bad with trezors company does that mean u lose your bitcoins or can u still get them?
The most important thing is to have your seed. All the major wallets are open source and anyone can see how private keys are derived from the later. AFAIK, Trezor uses BIP-32 which is a open standard. Worst case Trezor goes out of business and somehow deletes all their code from the web. I'm sure someone will have kept a copy of the code and will be able to help you out.
Trezor is like Armory or Electrum offline computer on a chip. There is still an online part that you need to install on a regular computer but Trezor removes the need to do a USB key dance. Personally, I don't mind the USB transfer because I rarely have to spend from cold storage since I keep a hot wallet too.