That's an unfair question - how do you decide between any of your kids!!! Given the fact that I would HAVE to decide though, I would choose my 1957 Challenge (she's one of those Japan made clones) mainly because I did just fine with her for 53 years (until the VSM bug bit) It would hurt my heart to have to give up my treadles but I COULD do it if I tried really hard. Don't even want to think about it .................