NHaler sells a lot of genuine Joyetech products but I didn't see a gold band one on their site. Joytech often makes attys for suppliers with gold bands and the supplier's name engraved on it. I have one that says Litecig USA with a gold band and it's a Joytech SR atty. Wordup has these with their name on them and there are many more but they always say in the description if it is a Joytech and if they don't it probably isn't. These days there are lot's of different attys made by the same manufacturer and from different ones and I don't know which are best but from what I have I'd have to pick the lr306 but they come from different manufactures also and I don't know which ones I have.
Back in the old days sites would advertise Joye/Janty attys and send you a SLB clone. That wouldn't happen these days because word gets out much faster and they wouldn't last long as a business.