Are you a hard heavy dragger or slow savoring dragger? And what strength cigs?
How much do you want a slimmer ecig vs how much do you want long battery life and the option of hotter hits?
Can you charge
batteries at work?
My suggestions -
must look like a cig
Get short battery life Joye 510 manual in white (check Liberty-Flights.com), and tan or white Boge 3 ohm cartomizers at NiteLiteVapor.us, PCC at NoSmokeVA.com, a drip tip for testing juices, a spare charger cable for at work and a second for at home.
longer charge/simpler/warmer
SmokelssImage Volt in the 78mm battery size for a 120mm ecig (can use lots of prefilled and blank cartomizers). I recommend you have at least one manual battery and on that you can use a DSE901 standard resistance atomizer and drip tip to test new juices. Spare charging cables are handy. PCC is handy too but often out of stock. Bloogplanet Maxxfusion and Halocigs G6 are the same model. Vapor4Life.com is more like the original manufacturer model - a bit less charge but allow a longer drag (10 secs vs 5). if you get Vapor4Life.com also try the Bloog or SI cartos.
Bigger, long charge, can optionally use hotter low resistance atomizers and cartomizers
Riva 510 kit from Liberty-Flights.com + Boge cartomizers + 510 drip tip (the kits there are real 3.7v big
batteries and they may have an SE model with 3-click enable/disable for safer pocketing) Press the 20% off upper left front page before shopping. And beyond this style there are all kinds of ecig mods - look at some photos here (those wood ones are in much demand and harder to get and in many cases unique)
http://www.e-cigarette-forum.com/forum/new-members-forum/225727-pictures-your-setup.html
All need eliquid and for these simple stuffing cartomizers I recommend PG w/ 20% or less VG. (thin juices). With an atomizer you can use any PG/VG. VG is thicker, makes more vapor, dulls flavor and hit.