I've been trying some Prochownik bows from George Vance and have narrowed it down to two. They are both very similar... One is 133g with a deeper camber, and slightly shorter than the other which is 132g, not quite as deep of camber, about a half inch or so longer, and a tad bit more tip heavy. The 133g has a thicker stick and feels as though the balance is more toward the frog. The 132g feels great too, has great grip--better grip than the 133g, but the 133g may focus the sound a bit more. I like them both and am having a hard time deciding. Right now I'm using them on my plywood 1930s King Mortone with Corelli Tungsten Forte strings. I will be buying a fully Kolstein (most likely the Guarneri model) bass over the summer. I might also switch strings--I've tried several kinds before. I sometimes use Obligatos or Thomastik Spirocore Weichs (not great for arco) or Superflexibles. I'm not sure what I'll use on the new bass, but the Corellis are nice. Both bows have good weight and balance, with the 132g slightly heavier tipside, and the 133g the opposite. I feel like I get a better grip with the 132g, but then sometimes I'm not sure if my hand is more comfortable with the 133g. I could use some advice and help. I'm a jazzer, but I'm a grad student who is trying to learn to play legit at a higher level. What do you think?