Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
The MDR V6 headphones are the best. Do not confuse these with the V600.  I have had mine for 25 years! Its amazing that these still exist unchanged over all this time. The sound is crisp and clean. When you wear these, it seems that the sound is originating from the center of your head and radiating outward to your ears. I just bought a second pair with two sets of replacement ear pads in case Sony stops making them. All good things come to and end, so Sony will eventually stop making them for reasons that will be unexplainable. When I picked these out at the store originally, I listened to about 25 sets of headphones on the rack and then picked the best sounding one. I have yet to hear anything better. My studio monitor speakers and my $1500/pair floor speakers can't beat the sound experience. They are very light and comfortable. I wear them in bed.

They are not good as studio monitor tools if you are mixing music, however. The sound is too pure. The sound you get on these will always be better than what you get on anything else, and so your mixes will be dissapointing on real speakers. For mixing and music creation work, get something imperfect.

My recommendation: get these while there still available, don't look any further

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