That's kind of a wide disparity between options. I like the concept of the eVic, just a little leery of a1.0 product (I know the firmware is up to 1.1, but the product is still a 1.0). I have a YJ lava tube and really like it except for the black chrome finish. The finish is crap, started wearing off in about a week, now it's mostly chrome. For simplicity, I don't think you can beat the twist (or the Vision Spinner).
If you want dead simple, take the twist\spinner.
If you want the latest technology with the wow factor, take the eVic.
The LT would be somewhere in the middle.
Just my opinions though.