Philly92xj

Hey guys, I just started vaping about a week ago and I love it. 1.) I started with the Nicotek Metro Kit and I have to say that its not a bad ecig. I like the taste and I get a decent amount of vapor with it. Now yesterday I purchaced the V2 Economy Kit and although the full flavor cartridges taste pretty identical I am not getting nearly as much vapor with it as I am with the Metro. What is your input on these two brands. 2.) Today I ordered a few bottles of liquid from litecigusa.net so I can try different flavors. Is there a way to clean the old cartridges to use the new flavors. 3.) I know that if i do need to get blanks for the flavors that I can get ones from v2, but Metro does not have them. Is there a site that I can order blanks for the metro or am I SOL. I don't know if it was a bad cartridge that i have on the v2 but as of right now I like the Metro alot better. Any input would be greatly appreciated.