Hi all,Where do I begin? First, it's great to be here and I have read quite a bit before making this, my first post. Been vaping a few months but still new to using a more sophisticated PV (instead of the analog-looking type I started with. I now own 2 ego-c's with the usb chargers. Two, because I thought i broke the first one when it would not turn on...had no idea about the safety precaution of pressing the button five times. Couple questions--am sure there will be more to come.1) I just ordered and ego twist 1000 mah. Can I use my usb chargers that i use for my 1000 mah ego-c's or do I need to buy imr batteries?2) Been using clearomizers but find they just don't last for me, even tried washing them and they don't give good vape/taste anymore. So I saw a sale on Boge lr cartomizers (no ohm given--5 packs for $23). Do I need a tank? Will it work with my ego-c's and twist? I did buy a saddle valve.Just not sure if the voltage/watts/ohms will be okay.3) For my lil bro, who is using what I used to use (the anolog-looking type)...he likes my 1000 mah ego-c but it's way too big. He does not want to spend a lot as he doesn't vape much and wants something portable--my ego-c is too big for him. Also, easy to use. He is using juices.Sorry for all the questions....hopefully some kind people will help me out, if only on a couple of these questions.Thanks and happy vaping!UV