What is better in a high end master bath: One big shower or shower and tub

[Brian Sullivan]

I am working on flipping a high end home in Yakima, WA and just finished gutting the master bathroom. In the past there was just a sunken tub and now I am trying to figure out if the new bathroom needs a tub at all.  The compromise is that I can fit a shower and tub but they would be a little small or I could just put in a large shower.  

Here is the old tub:

There was a door and wall that I tore out and now here is the space I have to put a shower, toilet and maybe a jetted tub:

Let me know what you think.