I am looking into upgrading to an eGo, but I don't know what would be better for me, the tank, the C or the 510. I want something that is easy to use and gives great vapor production. The less I have to fiddle with it, the better... And who are some good, quality & affordable vendors to go through. My current PV is from Aqua Vapor (a friend gave it to me though) and their eGo kits are like $60.00. Is this a good deal? Anyone have any experience with their hardware?