Yes, Spectra of-course!
We are in year 10 that we have it and I am thinking of replacing it next year because I like something new.
Here is my tip: check what the biggest diameter line is that fits through the stanchions. My stanchions take two different sizes: the top takes 10mm (3/8") and the lower line can be 8mm (5/16"). I would go for that maximum size because it handles so much better.
The problem with this is that it can get silly strong and expensive. There are two ways to handle that:
1. Let's say the lower can be 3/16" and the upper 5/16". You decide 3/16" is strong enough; then you can add a polyester cover to it for the upper which will make it the bigger diameter. You can buy separate cover about anywhere nowadays.
2. Let's say you can have 5/16" and 3/8" like me. You can then buy a line that has a core
which is part dyneema
and part polyester. This brings strength down to normal levels for that diameter and also the price
so that it makes sense again.
For a bare single
braid, I would choose Samsom Amsteel Blue over any other hi-tech line I've had in my hands. The reason is that it handles very good, doesn't feel sticky or waxy or hard etc. When you add a cover this doesn't matter of-course.