Pros: Easy to maintain, Easy to fill, Uses 510 drip tips, Attractive, Can use
tank cracking juices with no problems, Spare parts are cheap,
coils are easy to change, and old style coils are easy to rebuild.
Cons: Bottom fill, New style coils will soon take over stock, Silicone seals are hard to find when you drop them, Flavor slightly muted, New coils don't like high VG levels.
You'll find many answers like above...but all in all, they are a great clearo.