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

Input:
My son is very happy with these.  I have other more neutral-sounding Koss headphones that I use for transcription that have held up well for years, so I went to Koss when my teenager wanted new headphones. He often complained of the trendy, expensive headphones was just had to have being too tight (he DOES have a rather large head), and I've not heard any complaints about these.  He's usually just using them for videos and chatting on his tablet, so they don't have to be the most thumping bass-enhancing headphones that seem to be preferred today.  These are more neutral and, as such, are actually better suited for his needs.

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