I too have owned all three, and I would say the Buzzbomb, and here is why. I have had the G-Force at 1000,2000, 1000+bean's, 1000 grit it was a pretty good oiler but not as good as the Buzzbomb, 2000 or polished it was pretty on mediums but not as good as the supernova at box which goes longer to begin with. I have had the supernova at 1000,1500, and now at 1000+beans secret sauce and at 1000 it too was a decent oiler but of course lost some of it's backend snap (which is what I liked about it in the first place), but the Buzzbomb is a better oiler than the supernova, now onto the Buzzbomb I have had this ball at 1000,1200,1500,2000,1000+bean's at 1000-1500 it outperforms the other two on heavy oil, and at 1000+bean's it outperforms the other two on med. heavy/med. oil. All three were drilled very much the same, pin barely above ring and cg/and or mb swung right a little, with the Buzzbomb swung out a little more than the other two. I also noticed our profiles are very close, I hope this long winded response has helped some.
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Patrick