Favorite? Not sure at this moment due to some recent acquisitions. I meant to buy an old Bb made by M. Dupont, Paris. No serial number on it, so I'm not sure when it was made.
As it turns out, the cornet is in the key of C.
Then I added a Bb Conn Wonder from the late 1800's. That showed up and it was in pretty good shape. Just got it back from the repair technician. Plays great.
!
So that made a new one in C and Bb. I thought I would also include my Boosey & Hawkes Eb cornet to show the compete set. Pretty much have everything covered now.