I recently switched from a Blu kit to Volt, and the difference for me was amazing. Coming from a Blu, I thought having a PCC was essential, but just wanted to try the Volt before investing in all the gear.
I now have 5 78mm
batteries and have yet to order a PCC. I've found that 2
batteries easily get me
through the day until I get home, so there's really no need for me to charge on the go; completely unlike the Blu setup!
I order cartos from smokeless image and elite vaporworks. Love them both.