That's the way it goes. Florence is my favorite city in Italy. Others prefer Venice. I enjoy Siena (but enjoyed it much more about 15 years ago) but don't understand the appeal of Lucca. I like Milan which for others is skippable.

"Sorry, Tdudette that you had to exert yourself!"
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Since you didn't know about my asthma situation (brushing my teeth made me breathless), I will give you the benefit of tongue in cheek and not ask you to eat your words.... =;

Oh, and do see Siena's duomo, janetsob.

Florence has a greater variety of art, but Siena has the preserved head of Saint Catherine of Siena on display.>>

plus the incorruptible communion wafers:

http://www.therealpresence.org/eucharst/mir/siena.html