Berkley Big Game I found to be the best and cheapest to fill lots of reels each season.What made my mind up was taking a 100lb mako on a bluefish set up with 30 lb big game.Since that I stuck with Berkley.
Most of the guides in Fla who fish for a living year round use Ande and it has been recommended to me by several as the best for the money. I think it is better to buy a decent low price brand and change it often than to keep a high priced line on the reel a long time.
I like several brands depending on the fishing. For example, I like Jinki leader material for bass. I use Trilene XL for fresh water. I use big game for blackfish. For casting a nice limp line which doesn't have a memory.
Each line has it's own good points and bad.
Now I mostly use 100lb Ande on my senators for sharks. Jinki (200lb test) on my 80 and 130 internationals for BF. and some left over unknown stuff (lable worn off) for mackeral. Trilene xl for flounder/fluke.