4 ranger was for 10% off-hand proc and Ram's might (+3 damage/hit at the fastest attack speed...); 4 fighter was for feats, boosts, and a few more HP than 2 more levels of ranger, since I didn't have the feats to spare for ranged, anyway. Again, though, that's a 3rd-life monk with tons of gear, and would be crazy hard to pull off as a BF.