I have travelled to many exotic locales in search of GTs. Got 5 pounders in Palau and some a bit larger in Yap. Finally hit the jackpot off the Kimberly in Australia. My largest was only about 25 pounds but, we hooked dozens in the 8-12 pound class. I think they are tougher than similar sized jacks but they are all awesome fish. I still think the hardest pulling fish I have ever encountered are yellowtail, followed, in no particular order by amberjack, Cubera snapper, roosterfish, and yelllowfin. Fastest fish I have ever hooked are Wahoo and bonefish. Coolest allround remains the tarpon.