I recommend
1. An ego 650mah battery + EVOD tank + cheaper juices for the office
2. An Coolfire 4 (metal not plastic like Joytech or Kanger) or other VV/VW device plus a nautilus / Nautilus mini for home vaping at about 15 watts and getting more vapour and flavour from your cheap or gourmet liquids
3. A subtank of some sort (of the ones I've tried I like the Nano) if 2 (see above) is not enough vapour for you. Use heavy VG 'gourmet liquids' only
1. An ego 650mah battery + EVOD tank + cheaper juices for the office
2. An Coolfire 4 (metal not plastic like Joytech or Kanger) or other VV/VW device plus a nautilus / Nautilus mini for home vaping at about 15 watts and getting more vapour and flavour from your cheap or gourmet liquids
3. A subtank of some sort (of the ones I've tried I like the Nano) if 2 (see above) is not enough vapour for you. Use heavy VG 'gourmet liquids' only