I rebuilt the front forks, just by replacing the seals, and fork oil ( about $35 total, and a few hours work ). They are MUCH better now. Previuosly, they would bottom out just by hopping on the bike and applying a little down force. Now, even though I did not upgrade the springs, they actually do their job
As for the rear shock, I am trying a GSXR shock, wich requres a little modification. On my other EX250, I just swapped in a 2008+ rear shock and it was a huge improvement - no mods required; it just bolts right in. I'll see if the GSXR is worth the added tweaking.