Price
Shimano is known for quality cycling pieces, but those pieces usually come with a high price tag. As of 2009, DT Swiss RR 1.1 wheels retailed for $265, significantly less than those from other retailers and less than other wheels made by Shimano. For similar road wheels from another company you might pay upwards of $1,000.
Weight
When you start looking at road bike wheels, you may notice some are significantly heavier than others. However, these DT Swiss wheels are fairly lightweight at just 840 g for the whole set. This includes both the wheels and rims, which makes for a smoother ride because you're not weighing down the bike. You'll also notice the bike is easier to carry and travel with.
Feel
These road wheels also are the best because of the way you'll feel when riding your bike. They have 16 spokes--other road bikes have fewer than 10--causing less tension when riding down the road. You'll also notice that on uneven pavement you'll have a smoother ride, because the wheels absorb more vibrations.
Stability
Shimano and DT Swiss road wheels give more stability to your bike and to you than other wheels. You'll notice the stability when taking a corner quickly, descending the side of a hill or riding on different types of terrain, including grass. Expect to get more wear than other road bike wheels.