I love the mini Protank II. I have a bunch of them, none of them ever leaked, flooded or ran dry. I load them with the thickest VG
juice you ever saw, wait 3 minutes, and they vape flawlessly from the get-go. Never had a burnt hit I didn't provoke myself by cranking up the power silly high. They feel heavy, solid and well built, and they look fantastic on top of eGo batteries.
It's so good, that's the tank I buy to get people into
vaping, because I know their first foray into the hobby will be enjoyable and trouble-free - and first impressions count.
The only so-so feature of the mini Protank II is that, since it's a bottom coil clearo, the vape isn't very hot. But that's just me: I like my vapes tongue-burning hot. But considering the other advantages of this device, I can live with lukewarm vapor.
EDIT: Oh and I forgot: if you want to make it shorter for stealth
vaping, it's perfectly usable without the drip tip, because the top collar is slightly conical to follow the drip tip's slope. If you have a lathe and you want to make it even shorter, you can also shave off the entire drip tip socket - and it's still useable!