i very rarely fish with J-Hooks, so i cant really give a good comparison.
but with circle hooks i very seldom miss fish, when i do miss them...i think its because i rush, and dont let the fish swallow/poor bait presentation.
i was recently in langebaan, and literally did not miss a fish...each bait=a fish...hooked in the corner of the mouth...and people around me were struggling a bit, so circles i think work well for eds aswell.
the question mark w.r.t eds would be elf...but i have caught elf on circles so it is possible, but j-hooks might be more effective there