It's easy to buy Dimarzio Evolutions... just walk into a guitar store and order some. You can also order them in a great number of colours, and can also mix and match the colours.
In Australia they run for AUS$189 rec retail.. In the states I'm sure they're alot cheper.
The DBK has a wizard neck I think, which is "shredtastic" like you said, the VWH has a slightly thicker feeling JEM neck. Both are awesome.
Breeds and Evolution pickups sound very different.
The Evolution pickups are much higher output. The Breeds are somewhat smoother, more responsive to pick attack and such.
That's what I've found with my guitars anyway...
Personally I prefer the Evolutions.