You are so right white is never out of fashion. I would set your budget and then look at your options. If you plan to stay in the house for many years then spend to the top of your budget (if that is going to give you a life time of pleasure), if you plan on being at the home for only a short time / few years then I would go mid range so it looks lovely, will have good resale value but you can invest your well earned money to go towards something else as well. Obviously Marble / Granite is the top of the range but there are so many cheaper and very attractive options these days that look just as good.

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I didn't like any of the stock standard vanities I saw being sold. By chance I happened to see a second hand vanity being sold on FB so I brought it ( see photo). I liked its shape and solid profile but didn't like its colour. I took it to a auto car spray painter and had them spray paint it in Benjamin Moore Kendall Charcoal (a greige grey). They did an awesome paint job with a mirror like finish. I brought a piece of primestone (marble look) for the top, two small towel rails to be fixed in the underside of the vanity that is sticking out so I can hang hand towels on either side. I brought a new tap for it (but kept the vessel basin). I ordered in some new legs for it online because I didn't like the legs on it (see below). Its currently at a joiners getting put together. I've actually enjoyed the process of pulling it all together. Sure by the time it has been put together I probably would have spent the same amount that it would have cost me to do a custom vanity however I think there is something to be said for re-using something a second time round rather than buying into consumerism that abounds us. All up I've spent $1,074 NZD for the vanity, the spray paint job, new legs from www.prettypegs.com, the new towel rails from Reece Plumbing & buying a new Elementi tap. That doesn't include the joiners costs - yet. I needed storage in my vanity. This one fit the bill for me. Good luck with what you choose to do! I am doing a bathroom remodel as well and enjoying it.

I have to ask, do you really need that bath when you have such a tight space? Unless you have tiny children (and remember that's a temporary situation!,) I suggest a larger walk in shower e.g. 1200 x 800 and heated towel rail on the wall nearer the window so its more convenient. Would definitely keep the double vanity for those busy mornings with storage under and you could add mirror fronted cabinet recessed into the wall above the basins to add more storage. Hope that helps!