Your best bet is probably an eGo style battery with a Clearomiser or Evod type tank, I'd certainly agree with Samwich et al that the MyEpack Evod kit is probably the best value and an excellent starter kit. It also has the advantage that you can attach the vast majority of tanks and atomiser types to the eGo battery unit, everything from the very cheapest Ce4 clearomisers to £100+ Rebuildable's will fit on there (bigger ones will look silly but work) and the Evod tanks are easy to use, easy to fill, easy to maintain and give good flavour and vapour for the price...