I have a pretty large selection of handcranks. I prefer them to treadles and electrics. I do most of my work on the Jones.
American #7
Singer 128
Wheeler & Wilson #8
New Ideal
Jones Serpentine (My Personal Fav)
Frister & Rossman E (Heathers)
Pfaff Model F (Convertible Treadle-Handcrank)