Don't bother with the cheap lines, they look the same and may seem to work OK, but once you have used the real deal TrailBlazer you will never go back.
Yes, it is more expensive up front, but it works out significantly cheaper long term, as you just don't have to refill or change out lines anywhere near as often.
Is a bit noisy at full revs, but worth it to not have to be changing lines every 5 minutes.
This is the only line I use now.