Yeppy...am using Protank 3 mini. Its gives excellent flavour and 10-20% more vapour than my other PT2/Evod, provided you built your own coil.
Best to use NR-R-NR wire :
http://www.e-cigarette-forum.com/forum/sg-vapers/536846-nr-r-nr-wire-new-sensation.html
Main Advantages over PT2 :
1) The slot hole is double that of PT2, hence able to suck in massive juices
2) Pin slides much more easily into the silicone rubber, unlike rubber on PT2, making your rebuild much easier.
3) Less tendency to have burnt taste due to double slot area to allow in more
juice which is aligns with the larger air flow than PT2.
Tricks I use to get massive flavour and vapour:
1) Dump the stock dual coil. Use a single 2mm coil. Theres too much misconception about need to use dual coil.
single coil is easy to built and no need to fuss over dual coils, as it is known to create so much frustration that users reportedly throw the whole PT3 away, what a pity. Performance has no difference with duals provided you know the trick. In fact building dual coils is very tough, if not done properly, can easily result in almost no vapour, so I gave up.
2) Use cotton of course. I use NR-R-NR 1.5ohm, 1.8 or 2.2ohms.
3) Roll a 1.5 times thicker cotton than you use for PT2 on a 2mm screw driver, you need at least 2mm to have enough wicking to prevent leakage
4) As the rubber silicone top cap is long it pushes lower than PT2 but still the slot is double in area than PT2. Hence you need to position your coil at the centre.
5) Flatten both sides of cotton to fill the gaps.
6) It will not gurgle. There will be some leakage down to the positive post as usual for all clearomizers after 20-30 vapes. One way to stop the leakage is to add bottom flavour wick, but it will reduce vapour by a lot, so no point. coils will need minmal obstruction and adequate space for max oxygen.
7) the larger slot will suck in enough
juice like no tomorrow, allowing massive vapour/flavour hence there's no burnt taste.
8) Some people complaint about the larger air hole. But its design this way to cope with the large slot to let in more air, a god send. Its actually not too airy but airy enough to allow lung-lung inhale or mouth-tolung, rather versatile.
Its a real chilli padi. Can only comment about the mini version, but most reviewers say the mini performance better than the larger
tank PT3.
Enjoy the awesome vape!