Sorry if this has been asked before, I really can't find any reviews/opinions on the Reliable 4200sw or 4400sw walking foot machines. I am considering purchasing one of these two models or the Juki 1541, which I have found reviews on. After talking with someone at a Juki distributor, I found out that they do not recommend that a synchronizor (needle positioner) be put on the the 1541. I think I would find one very helpful, as my home sewing machine have this feature. Initially, I would like to make leather purses, but also am looking for a machine that will be able to go through thicker leather when I progress to making other items in the future. I would appreciate any input. Thank you.