Cool vaping vs hot vaping is exactly what it sounds like it would be. There are vaping categories for cool vs hot, although the differences are rather loosely defined:
-- People who prefer a cooler vape ("Tootle Puffers") generally are low wattage, higher ohm, mouth-to-lung vapers. They are not particulary interested in the volume of vapor their setups create.
Ok what's a tootle puffer? | E-Cigarette Forum
-- People who prefer a warmer or hot vape (? name) generally are high wattage, lower ohm, direct lung vapers. They tend to be cloud chasers.
Are you a tootle puffer, mod whomper, sub ohmer, or max watter ...
-- Those in the middle are called "Mod Whompers", I think.
The Womper Woom OR You Might Be A Modwomper | E-Cigarette Forum
I guess I fit into the Mod Whompers category. Although I prefer a cooler vape, I use sub-ohm coils at a moderate wattage setting (0.5ohm at 30 watts) and like a direct lung type of draw.
Tanks and other juice delivery devices are generally classified as either MTL or DTL devices, depending upon type of intake draw they use. MTL devices tend to have a more restrictive draw similar to a cigarette, use higher ohm coils, and lower wattage settings. DTL devices tend to have a looser open draw, use lower ohm coils, and use higher wattage settings.
A clue to which type of juice attachment it is would be the resistance of the coil used. Coils that are 1.0 ohm or higher are usually for MTL, low wattage vapers who prefer a cooler vape and aren't particular concerned about the vapor production. Coils which are sub-ohm (< 1.0 ohm) are usually for DTL and higher wattage vapors, who prefer a warmer vape and lots of vapor production.
Flavor production
can be achieved with any of the above, but ultimately depends upon a whole host of factors including type of coil, type of juice delivery device, e-liquid used, air flow adjustments, wattage adjustments, wick material used, etc.