The best ones to go for flavour wise are clapton, titanium (if you prefer vaping with TC mode) or an Alien coil. The sweet spot for getting a balance of vapour and flavour is around 0.3ohms. Depending on your coil choice you'll want to up the wattage from anywhere between 50 and 100 watts.

Surge pods use ultrasonic technology to create vapour without coils. No wires are heated to produce vapour which prevents dry hits and an annoying burnt taste. Vapour is created at a lower working temperature, without the need for metal elements reaching high temperatures.

Most atomizer coils are made from Nichrome or Kanthal. But there are different wire types that some vapers use. Nickel, Titanium and Stainless Steel are also available, but less popular. These tend to be used for temperature control vaping and aren't suited to all e-cigs.