I don't know about the V2 products you listed. I did use V2 batteries, carts and eLiquid for a year (2012) with zero issues. I actually quit smoking using them. The CS is good and their products better than many cig-alike companies. You might try checking the V2 website which has it's own forum. It's pretty much open and they let people complain about their products in there without censoring much other than foul language. They have an employee who vapes that checks their forum and addresses issue, posts discounts, announces products, etc.. If there are issue with those products, you'd definitely find them discussed in there!