Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
I purchased this headset about nine months ago after reading all the largely positive reviews. This headset is used primarily for voice recognition dictation with Nuance Naturally Speaking 9.0.  First, I was put off by the very long cord and the large audio processing unit on it. Then, I felt the folding headset to be pretty rinky dink and too fragile for traveling. But, I rationalized that surely the digital enhancement would greatly improve the voice recognition leading to reduced typing errors and justifying this purchase. After several months of retraining the software to the new device, I returned to using the "el cheapo" headset I initially received from Nuance, which produces far fewer typing errors.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: D: negative