No, I haven't got one favourite, I've got several favourites, but I've got a few unfavourites too.
1927 99K hand machine for appliqué and binding.
Frister and Rossmann Transverse Shuttle hand machine for piecing.
Serata treadle for piecing.
Singer 15K treadle for free motion quilting.
I won't name the unfavourites. They are already in enough disgrace.