What, if any are the differences between a .125 or .130 low B string? Is there any noticable difference in feel/tension or tone? I currently have my Yamaha BB415 strung with a .130 low B. I am looking for a twangier/punchier low B and thought that a .125 low B may accomplish that, but then I am worried that the tension will drastically decrease. This may be a simple question , but I figured I'd ask for opinions before I shell out the money for a "trial" set. Thanks.