there are many different choices out there. whatever you do choose, make sure you get the liquid juice and not the cartridges. the liquid is so much better imo. i bought a "cigarette style" vapo my first time around. you inserted a nicotene cartridge and smoke it till it taste burned, then you replace it. that burned taste was awful as shit.
this is where i got mine and i loved it. lots of decent flavors. havn't been here since i quit tho, it looks like a lot of stuff has changed. check it out
http://www.volcanoecigs.com/