Auto feed is the holy grail of 3rd gen (self juicing) mods, and I've touched it twice.
First was with the ggts and afs or avs. Gravity and air pressure brings just the right amount of juice onto the 901 atty when using this mod when everything's working right.
On the Reo Grand using a full bottle of 100%VG juice and a LR510 carto, a deep long inhale brings just enough juice from the 6ml bottle to keep the carto perpetually wet.
I've got both, they've got their own individual strengths and weaknesses. If your emphasis is on 510's and simplicity, go for the Reo. If you like 901's and treasure extreme versatility, consider the ggts and avs. Both are well made, 100% mechanical mods.
First was with the ggts and afs or avs. Gravity and air pressure brings just the right amount of juice onto the 901 atty when using this mod when everything's working right.
On the Reo Grand using a full bottle of 100%VG juice and a LR510 carto, a deep long inhale brings just enough juice from the 6ml bottle to keep the carto perpetually wet.
I've got both, they've got their own individual strengths and weaknesses. If your emphasis is on 510's and simplicity, go for the Reo. If you like 901's and treasure extreme versatility, consider the ggts and avs. Both are well made, 100% mechanical mods.