I can't see spending $1K for the ES. Of course, I can't see spending $1x,000.00 for a Gen III right now anyway because... well, my "real life" is vomitting expenses right now and toys have to take a back burner. But I digress....
I ride my gen I about 15K miles a year in widely varied conditions. Everything from a 30 mile - no bags "mental health break" ride, to 3,000+ miles of fully load "bring way too much crap you'll never use" mulit-state camping tours. I adjust my suspension accordingly for each ride, but to date, I can't ever remember thinking while I was riding "Gee - I wish I had more compression dampening right now". I think it's a gimmick with almost no chance for after-market support.
Now - ABS, heated grips, cruise control, and more stator output? Whole different story. My next bike will be either a cream puff Gen II with little miles, or a Gen III. I need to get 3ish more years out of my bike. At the rate I'm going, that will be at around 90K miles - well within reach based on my readings here.
Sometimes the waiting is the hardest part...