Most of you are correct about the Max ultra grn. It has a strange feature now that when over stretched ( when your hung up and break it off ) looses its strength .
Never need backing. Fill the reel ,,,but pull off 50-60 yrds and blood knot a new peace once, twice a season. Most fish found on the Vedder are NOT line shy. I even use HI viz lines and still catch 20-30 steelhead per season.
Rod's suggestion on Izorline one of the best Co-polymer lines available is a great product. The co-polymer lines have very small dia. but super strong and flexable . Braids are NOT a good option . The mild stretch of a ( 10-15 % mono or co-polyr ) helps you land fish with its shock absorbsion ,,,,braids average 1-3 % stretch ,,,,,bad deal .
So 12-15 lb P-line , Izorline , ,,,stay with good quality anything and you'll be fine