being slow is unfun and boring, but the damage and HP you get in return is a huge advantage
30/9 is borderline bad build imo, you need full team support at all times, are immobile as shit, but beast hits like a champ
27/12 is the more typical heavy STR build 2hander gimmick, still stupid strong, but not a crippled idiot when holding W
24/15 is almost the typical build for NA poles/2handers, thus the least interesting 2 play (but worth trying, would recommend this without MW weapons or armor)
21/18 is what i do now, good balance, lets you have nice HP and damage with more athletics to keep combat interesting
below this scale enters my old friendgy eu backpedal builds
edit: if you are going to do a man up strength build, dont gimp yourself, max IF too, to truly live teh experience of a griefing strength build fat american cliche
the more you want to be a solo superstar and flank people and the such, the more agility you need, so just keep that in mind as you level and make your build based on your playstyle