As wv2win mentioned, the increased nicotine could possibly change my vaping needs that currently require really long pulls a hundred times a day. I use a ProVari with the 18650, a Reo Mini with the 14500, an Alpha UltraMax and RES with the 17670, and an E-Power with the 14650. For coils right now, I use a LR Boge carto on the Reo Mini and ProVari, a 1.5 DC on the Alpha, and clearomizers on the E-Power.
-Devin