The Extreme is definitely a much better buy than the Volcano. Much cheaper and the most versatile vape around. IMO the Volcano's biggest edge over the Extreme is reliability. Quite a few owners have had one thing or another go wrong on the Extreme, from the digital controller to flaky power adapters. You do have a two year warranty, but with the digital aspect making the Exteme more likely to have problems, the 'cano Classic gets the nod for long term reliability. Haven't heard of any problems with the Digit, but S & B did drop the warranty down to 2 years on that one. Digital is surely more prone to problems than analog.