39 I have read and considered numerous cases in which this court has heard and determined appeals against sentence for murder since the commencement of the Criminal Law Amendment (Homicide) Act 2008 (WA). In particular, I have taken into account the sentencing dispositions in Atherden v The State of Western Australia [2010] WASCA 33, Heijne v The State of Western Australia [2010] WASCA 86, Austic v The State of Western Australia [2010] WASCA 110, Pedersen, Johnston v The State of Western Australia [2012] WASCA 18, Goodwyn v The State of Western Australia [2013] WASCA 141, Khan v The State of Western Australia [2013] WASCA 193, The State of Western Australia v Lee [2013] WASCA 246 and the decisions referred to in those cases. It is unnecessary to reproduce the relevant facts and circumstances or the sentences imposed in the previous cases I have read and considered. There are some comparable features between some of those cases, on the one hand, and the present case, on the other, but there are also distinguishing features.