Welcome to the forum, Cathy.
I received mine last Tuesday, and couldn't be more pleased with its performance. Throat hit/vapor production is fantastic.
Having said that, the cartridge size demands that one top it off after every 10-12 deep draws.
As for battery life, the 3.7V units that arrived with my eGo kit are incredibly long-lasting, and I am very, very impressed with their performance.
This is my first PV, so don't take my word for it.
Bamm
Thank you for the welcome. I'm glad you got a product you're so happy with as your first purchase! If I could get as many draws as you get with this thing, I'd be a little happier with it. But three draws? Just not enough. And these batteries are just rediculous.