I have been loving my ViVi's now for a few months. They just work. I have dropped them, and my Vamo which they were on, several times and have only broken one. I actually bent a drip tip but the ViVi still works great. I just got 2 iClear 30s. I am liking them so far but I doubt they will replace my ViVis, well at least not for a while.
The only problem I have had with the ViVis is a burning taste now and again. I did the tilt-a-whirl and every other suggestion I could find to get rid of the burning taste. I finally stumbled on someones suggestion to remove the shroud around the coil. What a difference!!! I have gone up to 12 watts with no burning at all!!!! Now before I throw in a new head, I take out the shroud and all is great.
Tried a carto-tank,as I have read so many people love these things. I am not a fan that's for sure. Damn thing is always flooding. I need to get some different cartos before I pass final judgement. I can not recommend the smoktek cartos. I go the laser cut 2 hole 2.5ohm cartos. I vape 60vg/40pg. I got the 2 hole because I had read about wicking issues with juices with higher levels of vg than pg. Maybe the single holes would be better??
Enough rambling, I would give the ViVis "Two thumbs while whistling Dixie!!!!!" Fo Shizzle