Re: EMG vs. Duncan Live Wire
The Livewire Metal set (which actually has a Livewire Classic for the neck) is a great set of pickups, but keep in mind that the metal bridge will be difficult to impossible to get cleans from. It's insanely hot. That said, I love the cleans from the neck position and it's quite controlable. It's one of my favorite neck pickups. The Dave Mustain pickups are just coming out, and I think they're a little more tame than the metals. I don't know if anyone here has a set yet or not, but I know Kac is (im)patiently awaiting his. I'm sure he'll have a full review as soon as they arrive.
A lot of people find the EMGs to make guitars sound alike, but I think that has a lot more to do with setup than anything. I haven't personally tried a set.