I like using the QT emulator for the debug display. I also like the option that lets me use real menus for catalogs. However there is a difference in behavior that keeps burning me.
On the real calculator, I am in the habit of hitting <-- to close a catalog without selecting anything. On the QT emulator, if you use the option to use real menus for catalogs, hitting the <-- to get rid of the catalog will actually do a delete. So, if you are in programming mode, it will delete the last step. I understand that you can get rid of the menu a different way, but the habit of doing it one way on the real calculator and having that way behave destructively in the emulator is frustrating.