IMO, the little 510 atty out performs the rest. It seems to have better vapor and tastes better. To me, taste is VERY important and I think the 510 atty does a better job than the others of bringing out the true flavor.
The other two atties seem to have a more flat taste. The 510 atty seems to bring out both the top note and body note so that it taste better and has a more "accurate" taste. By accurate, I mean it tastes like what the flavor is supposed to taste like. With the 510, especially a new one, if I am vaping maple, it tastes like maple. Whereas, the other atties do not taste as much like maple. If I am vaping other flavors, same result.
While I can appreciate an e-cig that can hold a lot of liquid and won't leak, to me, a good-tasting atty is more important. I think the 510 atty has it over the others.
The other two atties seem to have a more flat taste. The 510 atty seems to bring out both the top note and body note so that it taste better and has a more "accurate" taste. By accurate, I mean it tastes like what the flavor is supposed to taste like. With the 510, especially a new one, if I am vaping maple, it tastes like maple. Whereas, the other atties do not taste as much like maple. If I am vaping other flavors, same result.
While I can appreciate an e-cig that can hold a lot of liquid and won't leak, to me, a good-tasting atty is more important. I think the 510 atty has it over the others.