Lemond spine design titanium/carbon

dombo6

Hi, anyone got any experience of the above? I currently have a steel/carbon Lemond Buenos Aires and have an opportunity to get a ti/carbon Lemond frame in the same size. In each case the toptube, seat tube and seat stays are carbon, the rest metal. Mine has 120 oclv carbon and the new one would be 110 oclv.
I ride mostly sportives, including etapes, and wondered what difference I could expect and whether the upgrade would be worthwhile?
Any advice much appreciated.