As far as I'm aware the 734/5 is the only BB to get the dark brown to black sunburst rather than the more traditional sunburst with the reddish hues like the P34/5.
Like you, I much prefer it. As you say, it's very classy.
I think I still prefer the range before this, but if I want a modern active then this is it... just behind the BBPH 😁