GREAT THREAD on someting that really does not have a definitive answer when it comes to lines.
First, it was true that a few years ago, their was A LOAD of BERKELEY BIG GAME in the smaller 1/4lb size spool, that was not from the factory, going around. The labels were exactly the same, and the color was pretty similar, but it was some off brand 'bulk' monofilament that was being passed as BIG GAME.
Berkeley happens to have a load of loyal followers and out on the CALIFORNIA long range boats, BIG GAME happens to be one of the more popular lines for tuna fishing.
Our experience in the Bay, found it to be a very tough line that would hold up over a couple of seasons. It is noticeably thicker then Jinkai, Silver Thread and Momoi, but much more limp then Ande line. It has EXCELLENT knot strength, and very good abrasion resistance. One problem was that when you first used it, a 'powdery' dust would come off the line. Another is that the clear colored line would turn cloudy white after a few trips. Not a big deal when bottom fishing, but tuna fishermen when fishing in clear waters would notice a difference in how many bites they would get on the chunk.
I would recommend it, in the heavier lb tests, from 30 and up. Their 50 and 60lb line happens to be pretty indestructible. If i had to choose Ande or BIG GAME, BIG GAME would win hands down. Its a newer product then the original Ande, but its just around a better line for the dollar.
I am going to paste a link in of the BEST SITE on comparing MONOFILAMENT LINES. Kilsong brought up a excellent review done by SPORTFISHING MAGAZINE. One must remember that their is no perfect line, and that you have to balance, abrasion resistance, limpness, diameter, wet knot strength, shock absorption, and price when purchasing a line. One company may make lines in the lighter pound tests that are very good, while their heavier lines are not as good. I would choose from a handful of lines, when filling up your baitcasters, boat reels, and your tuna reels.
LINE TEST COMPARISONS FOR LINES FROM 10-400LB TEST
EC NEWELL MAN*