Only had it a few days, but very impressed so far. The build quality and functionality are outstanding.
A very slight rattle to the fire button, but not in any way annoying.
Came with M1 coil installed. Great flavour and decent cloud at 55W (which is a bit lower than OBS recommends). That coil is now on its 5th day and still working fine, despite me being a chain vaper.
Absolutely brilliant bit of kit for a very good price.