I am a big fan of ESP guitars especially the EC 400. Anyway it seems to me that the Ibanez you currently own is a better guitar than the low end ESP. The Ibanez haz the wizard II neck which is supposed to be pretty good from the reviews I read. I like the sharktooth inlays. It also has 2 humbuckers and one single coil in the middle which gives you more switching options for many different possible tones. Why don't you just pick some new pickups out for the Ibanez? The only things I like better about that particular ESP is it's agathis body with a maple top not basswood and it has a licensed FR trem on it instead of a edge III.