Hello, i had smpl mod with mutation x v2 for about a month. But yesterday i dropped it and it seemed to be broken on the button area. So this time im trying to get a box mod and im looking at segelei 150 W authentic for $78. And im wondering if buying this device is worth it for this price. Lastly if i get the device can i still use my mutation and can i use two different brands of 18650 batteries for the mod. Thank you !