$500 can buy you a lot of rod on the lightly used market. You wouldn't have to exceed your limit to get a very well made rod.
My most recent 8 weight is a used Anderson 13'3", and it was within your budget. For me, it is an absolutely fantastic rod - I couldn't be happier.
My most recent 8 weight is a used Anderson 13'3", and it was within your budget. For me, it is an absolutely fantastic rod - I couldn't be happier.