Trident vs. Helios and Storm Rider 2.1 vs. Kraken

[truebenny]

I'm debating on which genesis and drip atomizer to get. Can someone give me some points on why I should get one or the other?
Some pros and cons be nice too.
As far as I know, the storm rider 2.1 has tank cracking issues. If anyone who has pictures of it with the stainless steel tank, I appreciate if you can share it with me.

thanks !