We all see the reviews on tanks and atty's and RDA's and so on. My thoughts are that we look at what we have and give an opinion from personal use, include a pic if you can. I would appreciate comments from noobs as well as experienced users.
This is the Twisp Vega tank. You unscrew the top and the attached coil comes out of the tank with the top and mouth piece. The mouth piece is one of my favorites being quite flat and a wide inhale hole. The coils are a simple screw in into the top piece and come in .5 or .6. Also attached to the top piece is the airflow control. What attracted me at the time was that I was in that transition between high nic MTL and lower nic DTL. This little tank is capable of both via the combination of coils and airflow. I find the battery use very good on a couple of different single battery mods. No leaking. Coils can gunk up if using max VG and juices with sweetener.
Pro's
Easy to fill
Easy to change coils
Can MTL or DTL
Great mouthpiece
Good battery usage
Works well on various mods
Does not need high wattage
Very clean and easy to use
Cons
Can be tricky to fill
Coils can be expensive @ R180.00 for 3
Coils can gunk up
Please feel free to ask questions about this tank. Please post about your tanks and experience.

Pro's
Easy to fill
Easy to change coils
Can MTL or DTL
Great mouthpiece
Good battery usage
Works well on various mods
Does not need high wattage
Very clean and easy to use
Cons
Can be tricky to fill
Coils can be expensive @ R180.00 for 3
Coils can gunk up
Please feel free to ask questions about this tank. Please post about your tanks and experience.