From my experience this is what I use for what you are talking about. I use 8wt WF float line by a fairly new company called Superfly. It is a mid-high quality line a reasonable price. I bought the "premium" line at $27.99 a great deal, the "premium" has an extra coating on the exterior skin of the line and it allows it to shoot easier imho, and worth every penny. Dont know if LRO carries it but give them a look. I use this line for all situations. I just used it today for trout on the Caney Fork River, I use to flip big poppers and flies for bass and stripers, and I used it down in Florida on the gulf(PCB/Destin area) just last summer. 90+ degree heat and the line shot out and flip my salt flies just as easily as a #16 ZM on the rivers at home.
Hope this helps, just my 2 cents.
"We try to be perfect, but we're only fishermen. We wade out into the water, we don't walk on top of it."