Bubble hash will get more weight but extract less total cannabinoids. BHO will extract all the cannabinoids (jar method, not tube method), but will result in less weight because it isnt extracting extra plant material, like bubblehash.
I agree with Frenchy that most BHO in dispernsaries is made by folks whose first priority is profit, thats why these folks use impure butane like vector and mislabel their extracts with "brand names", but for the home maker, you just cant get any purer than a home BHO extraction (assuming you find and test clean butane), and a BHO extraction will rupture cell walls and extract all the cannabinoids, whereas a bubble hash extraction just breaks off the trichomes from outside the plant, and ends up being 20-30% plant material, so you end up not only with a impure extract, but some cannabinoids are left behind when youre done.
That said, I like ice bubble hash, the taste is nice, and back when I was smoking a really enjoyed it above the other types of physically extracted hashes. Im not ragging on bubblehash, just noting that it isnt as efficient an extraction method.
What I would do if I were you?
I'd make the bubblehash, then dry the leftover processed weed, and make BHO out of that, to squeeze out the last little bit of cannabinoids and to have a nice vaping stash as well as a nice bubble stash.