--Courtland, Scientific Angler mastery , Airflow all are good.
-I would go with what your local shop carries. They should be able to deal with any warranty claims or problems if they occur with these lines.
-Also local shop with good volume should have competitive pricing.
--I didn't ad Rio as I haven't personally used it, I don't think anything is wrong with it either however I have and use the lines reccomended.
--If you are not going to be casting the line, you could go cheaper. The price is in casting ease and quality control. That is higher quality lines should actually sink at the rate given and most have graphs to show even sink, or line bend.
--As to lasting a long time I think it is mostly in how you treat and clean the line rather than just price.
--I guess my point is hard to go wrong with modern lines as for the most part they're all good so I look for local service and availability.