If anything, the QC on the 25th anniversey YF-19 is near perfect IMO. If transformed correctly, the nose should lock up super-tight.
OC-wise Yamato seem to have been on a bit of a roll recently, with the Nora SV-51 and the 25th anniversery toys being near-flawless (especially Nora). Hopefully, the cannon fodder tan SV-51 and the YF-21 will be just as good.
Graham