My ego C Twists get almost no attention since I got my pair of iTaste VV 3's. I also had to reduce my nicotine levels because it produces vapor better or more effectively--down side is I go through more liquid but WOW! I couldn't believe the difference when I first got them.
800 mah battery isn't alot so I carry 2. It will charge while you use it if you're near an outlet or a USB 2.0 or 3.0 computer port. My twins get me through the work day since I don't vape very much at work--too busy and refuse to go outside with the smokers--potty breaks for me. Weekends and at the end of really frustrating work days, I sometimes have to use the pass through if I don't pay attention and run them both down at the same time. If that might be an issue for you, I would highly recommend the MVP 2.0 Shine series. The same technology, much bigger battery and pretty colors. It is too heavy & big for my tiny little purse but I often think about buying one to sit next to my recliner. Then I talk myself out of it because I can easily plug my VV3's in if I'm sitting in my recliner and save the $40-50 for more DIY e-liquid supplies &/or another VV3 for a hot spare.
I like the square shape of the VV3. It's easier for my stiff fingers to grasp than the round batteries and it doesn't roll. No, it won't fit in the holder my husband made for my egos but since it doesn't try to roll away like they do, it's ok. He can make me another holder with square holes but I don't really need one. I use the round holes in my other one to hold filled EVOD tanks. I didn't care for the warmer vapor of the iClear 16 (long wick style). I do like how much easier & less messy they are to fill than my EVODs & Mini Protanks but the heat, less flavor & frequent dry hits from me not twirling it properly or vaping it empty so I could clean it to change flavors--another pain--made me put the iClears in my Va-pocalypse box.
Another thing to consider when choosing a clearomizer/tank/topper is what types of e-liquids you'll be putting in it. Cinnamon, citrus flavors, colas, absinthe & others will damage polycarbonate plastic tanks like the EVOD, iClears, Vivi Novas, etc. You'll need a glass, metal or Polypropylene (the cloudy plastic many e-liquid bottles are made out of) tank for those.