I have the seat concepts seat +pan (ordered complete, $300 shipped to CA) and I'm still evaluating it, but it's definitely improved over stock. One thing I'm not sure I like is that it's a foam seat, shaped differently than stocker.
On my dirt bike I have an enduro engineering gel seat, and it's very comfortable, I was hoping for something more gel-filled than foam. KTM has a powerparts gel seat for the 690, has anybody tried it? I'd hate to buy it and have it be only a little better than the stocker.
If the gel powerparts seat is pretty comfortable, I may have the seat concepts one for sale..