Very good hotend. I only print in PLA, but I've lost patience with having to tinker with stock creality hotends every few prints. So far, no tinkering required, and my prints are much better. There is nothing to secure a glass bead thermistor though, and I don't trust it to not work lose, which would be a fire hazard. Buy and replace your glass bead thermistor with a tube type, and then you can secure it with a grub screw. Other than that, perfect so far.