You caught my attention with the boast saying that it can do the same thing as the twist? is it like having a mod then? Only place i seen that at was Happy Vaper, and the comments where less then stellar

but if someone else has them (hopefully for cheaper then $60) i might look to that instead (my personal preference)
The Ego-C Twist is a Chinese ripoff of the Joytech Ego battery with the Canadian made Ego booster from Artisan Vaping. It is obvious that Joyetech aquired a booster, tore it apart & copied the buck boost circuitry and built a all-in-one type battery. I feel sorry for Artisan Vaping but they had a good run with the booster.
I basically started vaping with an ego battery from the begining, so I've been accustomed to variable voltage. The booster, at the time was a cost efficient way for me to experience VV.
Scott convinced me to buy one:
Because of its size, the eGo booster is a delicate piece of hardware. I'm am still using the 1st one on a daily basis. Never had an issue with the dial. due to me, over-tightning a CE2, the center post has fallen in & needs to be pulled up, every so often. Just recently, the casing became loose & I fixed with some CRAZY GLUE. I take the booster everywhere & it gets a good beating sometimes. My other 2 boosters landed at my door & are on a shelf for future consideration.
If you have an investment in Joytech ego batteries, a booster is a convenient add-on & will provide you with the same VV as the Twist.
If you're looking for something new to provide you with VV and relatively inexpensive, I suggest trying out the Ego-C Twist.