20,00Km service

My 2006 S2R1000 is just coming up for its 20000Km service. I have the choice of 2 Ducati dealers (specialists). One removes the cylinder heads and grinds\reseats the valves , the other just checks valve clearances (both do all the other normal thingys, changing belts etc).
The price difference between the 2 isn't that big.
Do valves really need reseating at 20K? My bikes had an easy life, I like to go fast but I never thrash it.

Cheers, Stu