I've never used them before, but one thing I can tell you is be weary of those cheap blister pack kits, they use inferior batteries and as many people here will tell you, battery safety is nothing to take litely.
Take a look at this:
Kanger eVod Kit - Stainless
they are one of the best vendors out there, in my experience, and this to me is the best starter kit out there in a eGo form factor. You get 2 batteries, a charger, 2 evods which perform great and are very trouble free, and 5 extra coil heads.