Given the task definition and input, reply with output. 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.

This is clearly a defective model if it can fail so quickly. I've bought two and had problems with both. After just six months my first pair died, but the warranty did have an option to get another pair. On this second pair, after only eight months, they're both dead. If you need something for office use, DO NOT BUY.UPDATE #2Well, I received the replacement set in July 2012. They now aren't working.
Bad review