Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The collection itself is great but . . .

The collection itself is great, it includes much more than the VHS version, however I had a problem with 3 out of 4 of the DVD disks in the box not working correctly. I returned it and got another set only to have the same problem with the same numbered disks. I finally had to return it and did not get another replacement copy. I gave up after 2 sets displayed exactly the same problem. There's no reason for this because Sister Wendy's American DVD collection works fine as do all of the other art DVD's I bought. Yet, I had problems with this collection, so there must be a defect in the manufacture.