What's the consensus on the GT4? I'm trying to sell my Carvin and pick one of these up in its place. How's the construction and neck stability? How well balanced do the pickups and preamp sound? I'm told the electronics on the GT4 are different from the GT5 and 7, which is partly why I'm posting this, since the GT4 gets very little air time here. Basically this bass will be used for funk (pizzacato and slap) and fusion (which actually sometimes meanders into latin and swing, which I have a P bass for anyway), if I get it. Edit: Also, how does the string spacing compare to that of a Fender Jazz? Tighter, wider? Thanks.