I spent entirely way too much time trying to get one of these style extruders on my Ender 3. Maybe I picked a knock off without realizing it, maybe mine was just defective, I'm not entirely sure.
But it was ultimately the cause for my printer underextruding on certain layers. If you need a new extruder, go for something better than these cheap $20 ones and get an actually decent one.
But on the bright side, my printer is finally fixed! It feels nice to be able to get back into the hobby again.
The plastic arms breaking seem to be a super common issue with ender 3's. I have the neo version, which has a metal extruder arm, but I suppose that is also aluminium. Time will tell if that is going to be durable enough. What kind of stuff do you 3d print, if you have been doing it for years? Also just straight pla or more complex stuff as well?
I usually print things you'd find in r/functionalprint, and usually only ever in PLA.
I've tried ABS and PETG before, but I've rarely used them.