Shocks/improved suspension is as much a personal thing as choice of underwear, at least in reading responses from past long threads on pros/cons of suspension upgrades. I for one was sold on the results after rding the stock crap shocks for 120k. The Wilbers simply transformed my bike, and I am not a track day guy, nor am I the fastest rider. I do demo rides for the local BMW dealer so I get to ride all the new models, and my 94RS at 170k miles on Wilbers rides as well as the brand new 2012 BMWs. I do enjoy the twisties and the ride accuracy with quality custom shocks was simply "shocking". Couldn't resist.
Some things to consider though:
1. Cost, yup, you'll spend from $800 (min) to almost $2500 (max) depending on what you chose, Hogons to Olihns.
2. Tire wear/cupping/scalloping. Quality shocks on my 94RS nearly eliminated tire wear/cupping issues I had with the old shocks. The only thing I changed on my RS was the shocks, and tire wear life increased almost 4k, and cupping scalloping was nearly eliminated. I have proved this over three sets of tires and 40k miles.That to me has real value.
3. Long term. Do you plan to keep/ride the bike for many years? Like five, ten or more? Then the cost is really a value.
4. Rebuildability. Custom quality shocks are rebuildable, and you can have them tuned for you as your riding changes.
5. Resale value. To some buyers, quality custom shocks DO add value to buying a pre-owned machine.
6. Transferable. IF you go with custom quality shocks, and replace your current bike with a newer, lower miles similar bike, you could install the shocks on that bike. I know riders who have done this.
Opinions are like,....um,....you know, we all have one. Personally, for me, you don't have to be a go-fast/track day rider to realize the gains of quality shocks. Others feel that stock, crappy, worn out in 30k shocks are fine for the normal rider, that you'll never notice the difference. You have to be the one that determines the value in it. For me, my next bike will have quality shocks as soon as the stock shocks are crapped out.