subbing. google has plenty of contradicting opinions on the epoxy vs etch debate, from what i'm gathering though is that etch may be more suited to a production shop, while epoxy may be better for situations like most of us hobbyists are in where a project may spend a lot of time sitting between stages (more moisture proof). obviously not a pro here, i just do a lot of reading.
For me the big turn off is filler needing to go out on first. So epoxy seems more user friendly.