In case you are interested: http://www.dtswiss.com/About-DT-Swiss/Company/History

I don't know anything about their carbon rims, but have personally built wheels using their spokes, nipples and aluminum rims. All were well finished and have proven durable. Their hubs have a similar rep but I have not used them. I think there are sometimes better values or designs for certain applications, but if they make what you want at a price you are good with I don't believe quality will be an issue.

Also, many of us in the USA shop at some of the British websites like probikekit and chain reaction. While they are not custom builders, they do often have good deals on pre-built wheelsets. If they are in the EEA and their isn't some big VAT that you'll get hit with you may do well with one them.