I have all 3.
The Gripper is pretty nice, but the most fragile of the 3. It's comfortable, and takes a single battery. I like it a lot.
The Lambo is pretty cool, and constant voltage, so none of the PWM over-power of the v8, and it's built like a tank. It is the strongest of the 3.
The EVO Transformer is the one I am taking with me everywhere right now. Just so cool. The menu is like the Vmax, constant voltage, can swap around tubes, buy extra heads, it smaller than the Lambo and Vmax, lighter, etc... I am testing to see how long it lasts right now.
Both the Lambo and EVO Transformer can use lower resistance attomizers than the Vmax and VV Gripper.
You just made my decision a lot harder! Lol.


ohmy