I have both of these so I may be able to answer your questions. The 9042 has a sleeker (lower profile) toebox. The 8052 are a little more rugged and bulbous while the 9042 is slightly dressier. The leather on the 9042 is a little more matte whereas the 9042 is a touch shinier. The leather will wear pretty similarly. I wear the same size in both. Personally, I prefer the 8052 because I like the neoprene cork sole. Buy them both!
Thanks for your answer. What do you think about the size, are they equal?
My local store only have the 8052 in store, the other one has to be ordered to the store specially for me.