I have been using my Itaste SVD for a couple days now and I must say that I am really impressed with it's performance. My first mod was the eCad V2, and it was a simple mod with simple functions. My next was the Bolt. A straight mechanical mod. Both of them were "hand me downs" from friends at work. The Itaste SVD is my first brand new mod. And boy am I happy with it. The variable wattage and voltage is fun to play with. I really enjoy the ohm reader. And the battery life feature is very handy. I'm still tinkering with some fine tuning with the heads I have for my Kanger Protank 2 that a buddy of mine recoiled for me. They read between 1.1 ohm to 2.5 ohm depending on which coil head I use. I have been following some suggestions that I got from other forums with the ohms law calculator. That calculator is a great way to figure the general ballpark you should be in with the ohms you are using. The only issue with the "light saber" I have is when I use the 18650 battery, This mod is over eight inches tall. And not ideal for carrying out in public in your pocket. I also use an 18350 battery that is easier to handle in your pocket if you are going to be out. The battery life for the 18350 is great I get about two days use with moderate vaping while at work. The 18650 is about the same on my days off, when I tend to vape more. All in all I am really happy with the Itaste SVD. And I would strongly recommend anyone use it. For $60 bucks from the local vape shop, Electronic Stix in Ogden, it's not an overly priced mod either.