Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

The book is quite interesting but a bit too descriptive and the pictures were somewhat blurry. Some of these paintings are so beautiful that I wished for more clarity in my mind to see them. All said, it was worth every penny. Would make an excellent gift and conversation piece.
Good Review

Great product. Easy to install. Gave me hours more viewing for my TV. This product improved watching HD programs with my new Samsung HDTV.
Good Review

These headphones worked for about 3 days. I was running with my Zune and the right headphone quit working which made me so sad. The sound is very good, but if there's a bad design it's not going to last long. They were comfortable when they work though. Maybe I'll return them. I'm really afraid they'll stop working. I just got it in January. Can't do anything right now. =( Please help me. Thanks.

Bad review