Re: Ibanez JEM7V or Music Man Ernie Ball JPX-6?
well, I do not own either of these guitars, but i've tested each of them out many times, and here's what I think:
Looks: The Jem wins if you love having a flashy guitar, but if you want something that looks classy, go with the JPX
Sound: you get Dimarzio PU's that are made for shredding, but there's one extra thing: on the jem, you get the option of having a coil tapped humbucker and a single coil in the center, but on the JPX you get the Piezo.
Trem: well, not much comparison here: Jem's got the advantage for serious usage, but the JPX does stay in tune pretty well for moderate usage.
completely unrelated, makes no difference: the knobs on the JPX look/feel better
I love both guitars, but I would go with the JPX