It would be up to your amplifier, and if you have any pedals. If it's just straight guitar into say a JCM2000, either will be great, but the Duncan will be a little brighter. They're both super high output, but the Duncan somehow squeezes out more top end, which goes against all I have been brought up to believe in. If you want dark 'chunk', I'd go DiMarzio, but then I still use X2N's. Ya' know, basswood Ibanez guitars tend not to be super bright sounding, so maybe the Duncan is the way to go. Again, what sound do you have now? If it's bright, and your pedals tend to be thin and buzzy, go DiMarzio. Dark and muddy? Go Duncan. But really, you shouldn't be that disappointed with either. A few twists of the tone controls on your amplifier should level the playing field.