The GGTS was also on my short list, but was out of stock. At the time is was selling for $212 USD and only came with the 901 fiiting, not my favourite atty and the AFS was something like another $147 USD I believe. Wow! IMHO opinion that is an outrageous price to pay for any battery mod, even if it can hold a 18650. Since, the price has been lowered to reflect the actual and accurate exchange rate of the Euro, for which the price stagnated for quite some time at the upper end??
Another downside to any mod that can accept an 18650 batt, is the battery rattling that occurs when using the
device with any other battery combo. To some this is insiginificant, but would prove to be an annoyance to me.
I watched for quite some time Imeos videos on the AFS and later the AFS2, and was moved away from the system, for many reasons. The aesthetics of the
device started to diminish greatly with the AFS fitted and really disappeared after he developed the collector
tank to compemnsate for leaky AFSs. The unit with all its accoutrements has now become a two fisted unit, something more conducive to household use than being capable of being used comfortably in public.
Wrt carrying a spare gas can, I made myself a couple of 510 wetboxes, one for my 18650s, for a fraction of the cost of an AFS. The 18650 is used in my car for long trips, saves on using a PT.
Nothing wrong with the GG. Those who love it, love it allot, but the build is far too complicated for my liking. IMHO, Imeo never heard of the KISS principle.