Boy SABOT, you put the damper on that one

However, I have to agree with you. My brother had the old Monogram B-52 back in the 70's and it cast a large shadow in his bedroom as it hung from the ceiling. I also built the old Airfix B-29 in 72nd, it too was big.
1/144 is considered the airliner scale for that very reason - space & cost.
Now for some of my choices, which are not so bid:
B-9 just cool looking 1930's gull-wing, two-engine bomber
B-18 - an obsolescent late 30's bomber that was state of the art when built and allowed the US to send tne B-17s overseas. B-18s flew ASW and off-chore patrol in teh Philipines, Alaska, the West Coast, from Bermuda & Newfoundland, the Caribbean and from Panama at the start for WW2 - really a much more important airplane than is credited.
Both of the above can be found in vacuform, but nor in injected plastic.
Jeff