It would appear from the comments (so far), that the weight of opinion is for the B24’s in Coastal Command, however as could be reasonably expected, the Lancaster runs a close second.

Poor old B17’s haven’t had a lot of posting advocating for them so far.

Personally I hadn’t considered the B24 and the battle of the Atlantic.

Being an Aussie, I always think of the B24’s that flew missions from Australia and I have a soft spot for them.

My uncle was on B24’s as a WAG, trained as a pilot and then they said, too many pilots so its off to being a WAG for you. He ended up the war being a squadron leader WAG – unusual (from what I remember being told as a kid). He was involved in a lot of missions over New Guinea and Indonesia. He was based in the north of Western Australia, not sure which airfield.

cheers