There were actually 3 gens (though only the seats were different b/w the first, wider seat, and the second, narrower seat). These two had the same hull, I'm pretty sure. The current (3rd gen) has yet a different seat and cockpit, but also a different hull:
- The cockpit is longer on the current generation, by a couple of inches.
- The seat is narrower and, for my bottom, the most comfortable Epic seat yet - a touch wider than the V10 seat and more upright position, flatter on the bottom.
- The foot plate mounting is better vs. the previous generation Epic skis - gives almost 1/2" more foot room for the same cockpit width.
- There are paddle cutouts now.
- The drain is the new type.
- The layup is heavier (my V10 Sport of the previous generation was 5-6lb lighter than the same layup current generation).
- The internal stringers are different: thick foam type on the current glued to the hull vs. thin cardboard-style with carbon reinforcements glued to the hull.
- There is less rocker in the new versions.
- Less "rake" in the bow too (catches more leaves than the old one)
- Leash attachment point is standard now, if I'm not mistaken.
- The vent plug is different
- The foot strap is attached differently now, eliminating the annoying rubbing points on the outside of your feet.
- Front and rear handles
- More stable on flat water (don't know in the rough)
- $200 more?
That's what I can remember off the top of my head...