I've been using the 510 LR since early introduction of them and have tried many types so far. I have two findings in researching that I'll share. Drew @ NHaler has the best overall for me, putting out plumes of vapor with a draw and airflow that is perfect for me.
Second I will say Eastmall has the best overall deal at the $3 price tag you can not go wrong because if you only get 2 days out of em you ahead of the game vs Smoking Analogs but all in all the eastMall has a good LR atty as well and they last very long for me, but the NHaler made LR is better in overall performance. What I did was buy 100 of them from EastMall and I got 25 from NHaler. I use 1 NHaler & 1 EM on each of my daily vapes that I use all the time, then I use the EM for trials and some other flavors I vape in between,!! The End
Second I will say Eastmall has the best overall deal at the $3 price tag you can not go wrong because if you only get 2 days out of em you ahead of the game vs Smoking Analogs but all in all the eastMall has a good LR atty as well and they last very long for me, but the NHaler made LR is better in overall performance. What I did was buy 100 of them from EastMall and I got 25 from NHaler. I use 1 NHaler & 1 EM on each of my daily vapes that I use all the time, then I use the EM for trials and some other flavors I vape in between,!! The End