I believe there is two different C-47's..old/new...???
HE-111...is nice, and I'd do it again before the Hasegawa. My only complaint is the panel lines, like most "new" Airfix kits, are a tad on the heavy side.
B-17...haven't built it yet(Airfix). Looking at the parts, the first thing that jumps out at me is the engines...quite basic and just the "face" of the forward row of cylinders. I did the new Revell kit. Some of the details reminded me a lot of some of their old school stuff, not a deal breaker by any means. I did use resin engines on it and added a fair amount of interior detail. On the "bad" side...panel lines are even heavier than Airfix's kit...made me think of a die-cast model. All of the clear parts on mine had weird "swirls" in the molding. Even without building Airfix's offering yet...I think I'd pick Airfix over Revell.
109...counldn't tell ya anything about Airfix's kit. Tamiyas beats Hasegawas(which isn't bad either), but I think Eduards beats Tamiyas.