Welcome to the site Buttercup! Send our congratulations on to your hubby for choosing to go vaping. I've only switched about a month ago, but its a decision I'll never regret. The 510 is probably going to get a lot of mentions here, I too started on a look alike cigarette, but you might want to sway him to go to a eGo or something like that for easier draw, plus a lot longer lasting battery. That was my biggest complaint from my first e-cig was the battery wouldn't last 2 hours and i was constantly re-charging. Get him on something that is going to last all day (i.e. eGo with a cartomizer) and he'll be less likely to pick up a analog.
Get ready for some great advise, you have found the friendliest Vapor site on the web!