So if you want to know about my experience, here it is. I bought the Joye 510 from healthcabin.net and Sedansa Diva from sedansa.be. One of the Joey atomizers has the burnt taste so I guess that's defective. The other one is OK, but all in all I'm quite disappointed in this model. The throat hit is really really week and I have to put a lot of efforts to actually taste something. So, no good.
The Sedansa Diva is actually a little bit better and I've been smoking it for the last 2 days. The problem with them is that they don't have stock for all Tobacco medium and strong flavours. I have just spoken with them by phone and they say that they're not sure when they'll have it (customs problem).