If you have one upgrade to do, it’s this one! If you were questionning yourself if you should do it, then do it! It helps a lot with the spool rotation so that the printer doesn’t struggle to extrude the filament! Print quality is good, the understanding of it is easy and the adjustments for different filament size is on point! Only thing is that you have to be patient when assembling it if you have big finger. To fit the bearing in place the second time, it was a challenge! But that’s what makes it perfect!