Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
Very good headphones; during my research, I was surprised to learn they have been around since 1985.  I last had 'good' Sony headphones around 1990 .....but my cats ate one of the wires.  So I swore I'd never do that again ....until now.  I've been using the MDR-V150s, a $20 headphone, for the last 5+ years.  The V6 delivers so much more 'nuance' that it occasionally surprises me and I think, "I've never heard *that* before..." in a song that I've listed to 100x.  I recently imported Enya's Shepherd Moons CD using iTunes at 320kbs, but even at that setting, I could not hear anything 'better' with tracks I'm already familiar with.  So that may be the limit of their range.  I have not yet tried them with my cd player (Sony D-555, also from 1990; yes it still works!!), so I know that iTunes may be compressing or clipping the signal.  And since I sit in a kinda busy spot at work, they do a great job of keeping out noise.  No problem using them for 6+ hrs at a time!

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