i used the ts-e 45 for 2 weeks and decided the lens was not for me. I feft it was an outdated lens and needed to be updated.
i also tried the ts-e 24L ii (for 10 minutes at the store) and saw it was indeed much better built and the manual focus ring moved like butter (not hard and making unsmooth sound like the 45mm). To me there was a clear difference built quality between the new 24L ii and the old design of 45mm.
I am debating if i should buy the ts-e 24L ii or wait until Canon update the ts-e 45mm and 90mm.
The 24mm seems like a lot of fun! Oh how I wish I had all of the money in the world so that I can buy these lenses I want.