You need to take batteries into account, the iSticks are built in, the eVic uses 18650's. Personally, I like removable batteries better, but if you go that route make sure you invest in a separate charging system and a couple good batteries (if you don't have them already), it is about another $40, but well worth it.
I have the eVic Mini and really like it, solid feel and good set of options for the price.