2004 Premier does not have the center channel running down though it. It also had longer molded 1.0 fins. I like the ways it edges a little faster into the wake. Mine has a .7 fin in the center. I will leave that .7 on there because it doesnt even feel like I have a center fin. Nice and loose. I have the DNA which is super light. I have a heavier Nice bindings which seem to balance the board out for me. I put on my brothernlaw's LF bindings and could not believe how light it felt. He liked the super lightness, I didnt. I guess its what you get use to. I didnt like the graphic on the 04 premier DNA before I bought it but once i got it in the water the neon really stood out nicely. The bottom of the DNA board is transparent looking, its pretty dope.
The 04 ERA is the same as an older premier.