On all but one of my fly rods I run rio they make a great fly line it casts nice and loads fast. SA make good lines as well you really can't go wrong with both of those but myself I like rio more. What weight line are you looking to get because another line you could look at is the rio trout LT it only goes up to 6 wt but I run it on my 3 and 4 wts and the color of the line isn't as bright as other lines. Hope that helps
Andrew