Stainless is the way to go on the Vamo. I'll second what others have said. Buy a backup device, whether it be a Vamo or eGo or some other mod entirely.
I personally have had major issues with a Vamo. I bought a ProVari to avoid further issues and have been completely happy with it. I also bought a second Vamo and have had no further issues, and I use both every day.
I recommend that you do buy a Vamo, but also check out ProVari's and other extremely durable mods like the REO for the future. If you decide to stick with vaping, you can always upgrade later and still keep your Vamo as a backup device. That's the nice thing about vaping...you spend the money and actually end up having something other than a pile of cigarette butts to show for it.
You mentioned that you are a trucker, one of our other members left his ProVari on his tire and ran over it by accident with his dump truck. It still worked afterwards.
EDIT: I really recommend that if you can afford it, buy two Vamos.