The aro is one of my favorite
tanks. The coils last longer than the evod, and they are easy to dryburn and replace the flavor wicks. You can do this 5-7 times before you need to discard the coil. Great flavor and vapor, even better after rewicking with 2mm flavor wicks. Negative was this winter when I went outside in cold weather they did not work well, and sometimes leaked(flooded).
I had several of the original plastic evods which were great for awhile, but then had problems with all of them, mostly the tip cracking or breaking. The coils did not last very long, and I liked a larger
tank for liquid. I know the evod is very popular, so my experience with them may not be typical. Different strokes I guess. They are both inexpensive, so why not get one of each and decide for yourself?
