They all are good machines BUT I wouldn't even think of buying the 211 alot of parts & some screws have been discontinued on it & they are special to this machine.The stitch length is the same adjustment as the 111w which even though it's an older machine ALL the parts are still available & since it has a larger handwheel it will sew slower,parts are very low priced for it.
The Pfaff is probably the best & the 545H4 is the one with the higher lift,the 545H3 has a foot lift real close to the 111w, 1/2",there is quite a few common aftermarket replacement parts for the Pfaff on the market.
HTH
Bob