I decided that I actually HATE my Aspire BDC's. They suck bad compared to the EVOD. I have 2 Aspire BDC's (from two different places) and also 2 boxes of heads so I know it's not a "bad batch" issue. They just don't put out enough flavor or vapor for me. In addition, it adds a metallic flavor to my vape. I've been exclusively using the EVODs all day long on my spinners, my winder and my brandy new itaste MVP2. I am very, very happy that I chose to purchase the itaste mvp2. It works really well. I love the look, feel and vape that it provides. Best $65 I ever spent..........and I haven't even used either of the clearos that it came with yet; nor have I charged it yet!!!!! The mvp/mvp2 battery lasts a very long time (2600mah).