I been using Hybrid Ceramics ABEC7 from the JZN store on Aliexpress, decent price was fast shipping until their lastest lockdown. I only change the spool bearings and spool tension bearing if it has one. Changing them is very easy, I bought the spool shaft pin remover, for me it is easier then the channel locks. I got the tool from Bait Finesse Empire, it is SS not aluminum like others. I use a pin to remove the retainers, Make sure you keep your hand over them when pop the off or the will fly into the dark hole.