Gamakatsu 8/0 circles work for me. I guess if I was ripping 10-25# cats out of snag holes with 80# test on 11' & 12' rods I'd use 12/0 & 13/0 4X hooks too *LOL* I certainly get my fairshare of dinks too. But when the big one comes along, I want to be ready. That's not a slam against small fish....I like all of them, you have to catch what's there, can't catch fish that aren't there.
I landed a 62# bluecat, and at least 3 or 4 more flatheads over 30# this year on them, and a mess of fish in the mid 20# range and also alot in the high teens.
Circles are not for everyone. Thank goodness. If everyone used them, there would be alot of big fish caught instead of just lost fish stories !!
They were developed for saltwater fish & to hook them in the corners of their mouths for safe release. Flatheads are notorious for swallowing the baits, most catters let the fish run to give them time to "take the bait" I didn't gut hook one fish this year. I had one last week get it in his throat at Marion ,SC, but I removed it with my 10" bent needlenose pliers no problem.
I've fished with Robby too, for me, his hooks are too small, but he got alot of fish over 40# & 50# this year and a 66# flathead to boot. Those were on Kale hooks.
I watched a guy land a 34# flathead on a 6' rod with 12# test and a #2 hook.......yes.....#2- not a 2/0. From the bank, with an 8" skipjack for bait. Took him at least a half hour. I never thought he was going to land it. Taught me a lesson. One, obviously, keep a good stock of hooks on hand so you don't use a #2 hook !!. The skill of the angler has more to do with catching quality fish than just the hooks. I run the gauntlet on hooks & keep them with me while fishing, have switched around some too. The 8/0 circles out produce all of them for my fishing.
I guess use what you want, listen to everyone's advise and experiance, see what they catch, see what you catch, then decide what do you want to catch. Use what works for you in your area & for your style of fishing. Paylakes, streams, small rivers, bank fishing, large rivers, livebait, cutbait, boat fishing, size of bait used, size of fish targeted, all have to be factored in. I've dropped down to 5/0 hooks on occasion when all the fish are running 3-10 lbs. Best hook is the one that produces the fish you want to catch.