I actually think Boo is the best for using it's length (or maybe the Android saga, not sure). Imo Freeza saga was by far the worst at using its time. Too much hiding and just generally waiting around for things to happen. Minor villains just kept getting added to pad things out. At least the Boo saga was always doing something new, it never stayed in one place, or added random roadblocks (except maybe Babidi's fighters, but I'd argue at least Dabura was essential).
And the Freeza fight itself, which is what I think you were referring to, was the single longest "single location" event in all of Dragon Ball. This starts in the middle of volume 9 and doesn't end until the start of volume 12. That's a little over 2 and a half volumes of nothing but the Freeza fight, and only using the same 5 or so characters the entire time. Boo was released in the first chapter of volume 23, so the actual Boo part of the Boo saga only existed for about half a volume more than the ENTIRE Freeza fight, and that section included multiple characters and locations, new forms etc.
Edit: Apparently I can't math. The start of volume 23 to the end of volume 26 would be 4 full volumes, not 3. Still though, no single fight in the Boo saga even took 1 volume, let alone 2 and a half.