I wonder if those coils are any better than similar coils that FT carries for 4 bucks. I ordered mine a long time ago and I like them, but I honestly prefer horizontal coils...
$4.89 Replacement Coil Heads for T3S / MT3 / MT3S / Protank and More (5-Pack) 5-pack - 1.8ohm at FastTech - Worldwide Free Shipping
I have the coils you linked and they do work good but the VOCC for the Protank and more have a lot more flavor. The difference is really amazing. Now I know why so many people recoiled with cotton. Fasttech has the Authentic Kanger VOCC for a really good price. I believe they are about $6 a pack.