Well, I'm mostly a dripper...and when I can't drip (driving, etc) then I've used dual-coil low res cartos. But over the past few months cartos have become really hit or miss--at least for me. So I was
thrilled when the vivis came out. If dripping is a benchmark 100 in VTF, then the vivis were 85 flavor, 100
throat hit (which isn't really important to me) and 100% vapor...just a bit better than the best cartos I've used, which typically fell in the 60-75 flavor range with some near 80. But I did have the occasional dry hit with thicker juices with the vivis. The T3s have moved even closer in the flavor department. I rate them 90-95 flavor, 90 throat hit (a slightly cooler
vape) and 100 vapor. I love 'em.
If the quality remains consistent, I'll stick with these a good long while. I've been rotating through two of them the past two weeks and have run about 18-22mls through each and have only cleaned them both out once. I've had no dry hits at all, even with Sweet Caroline from iVape.net which is about 70vg/30pg. No leaking or other issues as some have reported. I have had to take some cellophane tape to one of the air holes in the knurled skirt (it has three) because it was too airy of a draw for me. Other than that, I'm way impressed.