I have been using ego twists for quite a while now and I am looking into buying something new. I am on a budget, so obviously a Provari is out of the question. I have been researching for 2 days now, and I am stuck between an Itaste or a Vamo. Does anyone have any pros/cons for these? I want one that can read the carto and adjust to it. Also, does anyone know of any good kit deals for these, as I would need the batteries and charger for it. Thank you 