All very simillar, CS-218 are the lightest, but 18.5” frames fits me best. (Long inside leg, short torso). I am NOT looking at the Workswell 063 or 057 frames as they are big bulky old and heavy designs. The MB01 have great geometry but looks bulky/awkward with the seat stay vibration damper.. slightly heavier than CS-218. The CS-887-SL have a massive 65mm BB drop and heavier than MB01, but TT are spot on correct lenght.

Have anyone build a CS-218 or CS-887-SL or LCM904 from Yishin Bike?