Got a Guru fit yesterday and I am pleased with the results. I was able to shave 1:37 off a climb this morning that I have been trying to get under 30 minutes for the last year. I finished the climb in 29:27. I have ridden the climb 10 times in the last year - so I have a good amount of data to backup the improvement. There was no wind advantage today either compared to other attempts. My seat was lowered and moved forward. My bars were lowered as well. I am impressed with the results thus far.
I have been riding for 4 years and never had a fit before - go get one if you haven't done so yet. It made me faster than any bike bling ever will.
Here's the proof to backup the claims:
http://app.strava.com/activities/61874034