Have you tried looking through the Houzz professional's tag or asking the people who have posted the photos that you've seen where they got their cabinet from?

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.

Hope post shows, got some weird error message

Total reno of bathroom and ensuite. Need to keep in cream tones not grey as bathroom door needs to stay cream as per all other doors in house and interior colours. Sampled grey tone tiles and they clashed. New vanity below, light oak, pic of old ensuite, and ideas. Want to keep wall and floor at 600x600mm. Selling house so wide appeal needed. Darker floor and white walls ( by either dark tiles or a darker timber effect floor as pics) OR white floor and walls (do they need dark grout as per example below)? Will 600x600mm work for both floor and walls. Will 2x 600mm work up walls, dont want to go 3 high. Doing this to keep costs down. Painting everything else white and installing white shutters. Showers to remain as is, glass with aluminum frame.