Thanks for the feedback ladies.

So, the skinnier the tire the more road buzz???? Because that's one factor different this year, my aluminum bike has 28C tires, and my old Trek has 32C tires. That's in addition to the aluminum vs steel difference of the two bikes.

I will try the suggestion to put a bit less air in the tires, to see if that helps. Right now I'm putting 100 psi in the tires and if I recall correctly, it's max is 110 psi.

Knotted Yet: I was interested in your statement that some people are more sensitive to road buzz. I may be one of them. One of my lady friends, who is close to my age, changed to a new aluminum framed Giant FCR 2 bike this spring (from her steel comfort bike), same time as I did. I originally test rode the Giant FCR 2 (it was a left over 2009 on sale) and decided against it, even though I loved the colors on it, because the road jarring was awful on it. Her bike does not have a carbon seat stay or the Zerts, but it does have a carbon fork. She doesn't feel the road buzz like I do, and she can't figure out what I'm even talking about, LOL.

Aquila: I have been riding about once a week, steadily this spring/summer. I have not been finding the soreness to improve at all yet.

CLC1968; I don't think I'm working harder on this bike than my old Trek. Actually this new bike rolls easier.

I haven't been on my old Trek at all this year, so I'm going to try my next ride on that one to see if I get the soreness.

I will also try the other suggestion of less air in the tires on my Vita.

If that doesn't help, would it make sense to try a bit wider tire? Would I need to get new rims too??? I hope not because that would be expensive.

Ciao