Ok... I'm deciding betwen the Ibanez BTB555 or Tobias Toby pro 6. I'm currently playing an Ibanez SR506 6 string bass with a string spacing of 16.5mm, wich is quite tight for my slap playing. I've read that the Ibanez BTB 555 has a string spacing of 19mm... What I'm trying to figure out is would the neck of the Ibanez BTB555 5 string be at least as wide as the Ibanez SR506 6 string? I guess what I'm saying is the neck width of my 6 string would be cool as a 5 string, but as a 6 string it's a bit cramped.