Cos,
yes, until you hit 7.4V with the I-7 you will be satisfied with 3.7V.
The 7 combo is Bliss my friend, no sucking on the attie, jsut a quick hit and you are in vape heaven!!!! The i-6 will be outstanding with the AFS, 100000% sure!!
I have to agree 100%, I will say only one thing.... 16430/CR123 7.2-7.4v + I7 = vaping BLISS all the way!!! The batteries can last me 2 days. Also i have been using the same 4 batteries rotating them daily since the GGTS was released with no issues at all or voltage drop. Its nearly impossible for me to even vape at 3.7v and enjoy it after being spoiled at 7.4... Trust me on this!