I realy like the Takman Rey 1% metal films and used them in my NCC300 build in the 1/2w (500mw) version for all resistors except the signal path where I used the Audio Note tantalum none magnetic type.
In my NCC-200 voyager amps I used 1/2W dale RN55 resistors also excellent.
In all these amps the 0R22 are obviously 2-3W types, same for the output resistor and the Zobel resister where they are expected to handle a bit of current
AFAIK the only reason to use 1W for the majoritity of the reistors in these amps is that the the MFR5 type sound better in the 1W version ?
I have never had a resistor failure in any of my Avondale amps
Alan