What do you guys find is the best way to go with buying tester tanks for customers to sample the juice before you buy. I've been down the CE4 road and evod style tanks as well. They don't seem to be pleasing the customers in the 2 shops we have. I'm looking into maybe sub-ohm style tanks but don't want to spend a fortune as we offer over 300 flavors in each store. Any suggestions on a good cheap sub-ohm tank? I've been looking into the isub acrylic tanks that wholesale fro an average of $9-$10/piece which would even be a serious hit in the wallet. I don't actually sell clones in the stores but I'm willing to grab clones for the testers. Open to any and all suggestions!