I have Dornbracht installed in my home for 17 years. Two Master lav faucets and a tub filler in the Madison Series. They still look and work like new. I just keep them clean and treat them nice, and they return the favor. I have had Hansgrohe in my children's bath for 10 years. A Pheonix thermostatic shower pipe and a Carlton wide spread lav faucet. These are also holding up very well, although they are not cared for in quite the same manner. I have all DuraVit fixtures, toilets (two floor mounted, and one wall hung) Two pedestal sinks, and two drop in sinks. These are very high quality. You can also order them with wondergliss which is a second process that makes the surface bead the water. The DuraVit products are fantastic. Designed with style and class, and not overdone.
I have worked Technical Service for Dornbracht and Hansgrohe, so I have been in the know for complaints from customer's. I can say that either company has an incredibly low percentage of complaints, and that most complaints arrise when new pipes are not flushed of solder paste and debris, before trim out and from remodeling with old service stops who's seat washers haven't been used in years.
To many people bathroom design, style, and craftsmanship are everything, to others it's just a place to do your business. I like to show mine off.