The best item i bought was a "DCA" and a "Cisco 306 atomizer". When driving and can not drip I like the Bottom coil protank. As far as devices the Vamo 1st edition with stacked 18350 batteries gives me the best vape of all the apvs and ego batteries i bought. The new innokin MVP ver.2 is showing promise as well. In this day and age why not go with VW and onboard ohm adjustment. just my opinion after starting with an overpriced blu setup.