I dearly love my 123R, it's one of my favourite stoves but I'm a realist. It's heavy, cumbersome and wind sensitive compared to a true roarer.
Depends upon your demands, put a 123 with a 1 litre heat efficient pot and foil windshild and it will perform as well as the vast majority of stoves.
Whats your definition of a 'true roarer burner'? 1400BTU's on a 123 and ETA type pot or a Nova with any old pot and about 3000 BTU's? Both have their place but don't rule out the 123, long term the 123 and ETA pot will still be performing when many other setups have packed up or melted.