Jim,
My bike tech expert, Helluvaskier is a fan of Neuvation. Which of their rims do you ride? Road Bike Reviews are interesting to read on these rims as some love, some trash. Their website recommends riding 700x25 tires at less than 140 psi as a means of softening rides and that's something I've done for a while.
I have the R28 Aero for the front and the M28 Aero for the rear.? I liked the fact that when I described my riding and my weight Neuvation said that the steel hub on the M28 was a better choice rather than trying to push the more expensive aluminum hub.? Check the dates on some of the posts, Neuvation will admit that they had a bad set of hub or wheels or something a while back.? Also, the Performance Bike Titans are NOT th same wheel as Neuvation.? Made in the same factory and look similar, but not really the same.? There are lots of posts that say both of them are the same.? Do not pay list for the Neuvation wheels, they are always having sales for one reason or another.? I bought the R28 front because it was on sale for the same price as? M28. Another advantage is the that newer wheels are made of 6066 Aluminum, not 6061.
I was absolutely amazed at how much better/freer the wheels rolled than my Shimano WH500's.? 2-3 miles per hour faster.? I improved so much that Lynn decided to start using her Zipp wheels to keep me in my rightful place (which is behind).? ?

And that actually does have some benefits.?
Caveat.? I don't ride fast enough to really need the aero spokes, I just thought they looked good.
I do have a 25 tire on the back and I put 100 lbs of air front and back.? My Continental 4000's (which I love) are only rated for 120 max.