Well,
I am long time flax oil drinker. After reading various posts by Elzi Volk (misc.fitness.weights) concerning her experiance with fish oil intake and it's benifits I switched to fish oil caps. One average fish oil cap contains about 300mg of Omega oils. If we use Sears recomedation of 5 grams for optimum cardio health, that comes out to nearly 17 fish oil caps( See =W= post about taking 20 caps a day).
After reading Sears explanation of flax's "short chain" omega oil profile versus fish oil's long chain. It becomes rather clear that fish oil has been proven (by studies) to be beneficial whereas flax ranks far below due to poor conversion and lack of studies.
I grow tired of taking shitloads of fish caps and will incorporate 1 Tablespoon of cod liver oil for 2.5 grams Omega 3 per day which is equal to about 8 fish oil caps.