Just thought I would post my opinion as I now own both and have spent a better part of a week with both of them.
I have found very few differences in performance between the two of them. There are some cart fills that I sway towards one then another cart fill and I sway back to the other.. Its a very close match up.. they are both very great e-cigs...
The only thing that I can say for certain is that the "auto" 901 batteries seem to last quite a bit longer than the 510s... I have 4 901 Autos and 8 510 manual batteries.. And not one of the 510s come close to the fully charged lifespan of an auto 901.
This is interesting to me as from what I had read before and in part what compelled me to buy 510s is that the battery life was "supposed" to be longer with the manuals. But I am finding it to be the opposite. It may be also that I like to take really long hits for huge clouds of vape too (LOL) but in any case, I am extremely happy with both of them and very glad that I have both to choose from.
I also got some manual batteries for the 901 however I did not receive the adapters that allow me to use them. So I am still waiting on them to arrive. As I "suspect" that the 901s will edge out the 510s with manual batteries due to the "seemingly" longer battery life and also the slightly better atomizer... But honestly, we are splitting hairs here.. they are so close to being "perfect".. (the both of them)....
I dont think anyone could be disappointed with either.
Cheers and hope this helps.
I have found very few differences in performance between the two of them. There are some cart fills that I sway towards one then another cart fill and I sway back to the other.. Its a very close match up.. they are both very great e-cigs...
The only thing that I can say for certain is that the "auto" 901 batteries seem to last quite a bit longer than the 510s... I have 4 901 Autos and 8 510 manual batteries.. And not one of the 510s come close to the fully charged lifespan of an auto 901.
This is interesting to me as from what I had read before and in part what compelled me to buy 510s is that the battery life was "supposed" to be longer with the manuals. But I am finding it to be the opposite. It may be also that I like to take really long hits for huge clouds of vape too (LOL) but in any case, I am extremely happy with both of them and very glad that I have both to choose from.
I also got some manual batteries for the 901 however I did not receive the adapters that allow me to use them. So I am still waiting on them to arrive. As I "suspect" that the 901s will edge out the 510s with manual batteries due to the "seemingly" longer battery life and also the slightly better atomizer... But honestly, we are splitting hairs here.. they are so close to being "perfect".. (the both of them)....
I dont think anyone could be disappointed with either.
Cheers and hope this helps.