The upper section is better, to my taste. Much beautiful landscape and after each bend new pictures. To Pirna very sexy. Now do not mean that it will then ugly. Altogether an absolutely recommendable bike path.
There are also people who can enjoy walking slowly. Who do not strive to reach 100km a day, but for whom the beauty of nature and the evidence of human architecture sweeten the day. Those are also right on the Elbe Cycle Path.