Looking ahead to resale: would you rather have a master bath vanity with dual sinks? Or a single sink with upper cabinet built-ins on either side of the sink like so?
I only have enough room along the wall for one or the other, and there's no other place in the bathroom where built-ins would really work.
I'm leaning toward the latter because DH and I never brush our teeth at the same time, and I love having all clutter (except the soap) hidden and off the countertop, so I wouldn't miss the counter space I'd lose with the cabinets.