I don't think that you can make complete generalizations about what a Ti bike will feel like vs an aluminum bike vs a carbon bike. I own all three (Cannondale, Merlin, Orbea) but each frame tube design is so different and also not completely typical of each material. The Cannondale is very stiff and when I bought the Merln, I noticed a tremendous difference right away. The Orbea Orca is a great climbing bike, much lighter feeling (its 15.3 pounds) but not as much of a magic carpet ride as the Merlin. Wheels certainly will change the ride characteristics of any bike, as will tires and inflation. I would approach the comments with raised eye brows about putting a CF seat post on your bike and how that will make a big difference. Maybe, if you have a compact frame and the seat post extends 10 or 12 or more inches - maybe. But then you have issues with correct seat post binder tightening so as to not crack the carbon post. I bought one 5 years ago and I could vaguely notice a difference. It was very hard to tell. I have a traditional frame with no sloping top tube and 27.2 post diameter. I hate chip seal roads and no matter what bike you ride, that road surface is terrible. Road paving crews will also tell you that it is a waste of money to install vs a complete asphalt resurfacing, but it is considerably less expensive than asphalt so that is why municipalities use it until the must do a proper road improvement. So, you can buy a new bike (Ti is lovely and will be around for many years), you can buy some lower profile rims that will not ride as harsh as aero wheels, you can buy some nice carbon wheels which you will not want to ride all the time anyway, you can use some 700 x 25 or larger tires assuming they will fit on your bike/frame (some bikes have very tight clearance at the seat tube so look carefully at that), OR, you can keep what you have and ride on different roads. Or all the above!