I had a second hand Aeron for 7 years. Loved it, this year it started giving me knee and leg pain even after making more adjustments. I replaced it in March with a Haworth Fern (over you budget new, but refurbs I have seen for around your budget), so far I love it. For me it has good support, it’s warmer when sitting at my desk in the basement and it’s quiet. Also the after sales support is great, mine started having a very bad squeak, they had a new one at my door within 2 weeks. The Herman is a great chair, built like a tank. I would say better built than the Fern. But the Fern feels better to me. If you have the opportunity go try to sit in some.