If you want to go for metal tones and not much else then the Illuminators, Crunch Lab and Liquifire could all work. Titan I havent played so I cant comment on that. For full-on metal Id also look into the D-Activators set; awesome for metal and surprisingly versatile and dynamic.
Evolution Bridge I'd stay away from. Lets just say it's an aquired taste, its got a very piercing upper mid peak.
If you wanna be able to do rock/hard rock as well as metal then the Breeds are pretty cool. Maybe an Evo 2/Evolution neck combo?
Air Norton is a very warm, round neck pickup. It goes great together with a Tone Zone in the bridge.
Also the Transition set if you're on the more rock/hard rock side of things rather than 'metal'. Extremely versatile pickups, I love em.
Unfortunately its impossible to know whats gonna work for you. Its always easier when you already have a pair of Dimarzios to recommend other Dimarzios
Go with your gut instinct and get the pair you think will work best but don't expect to get it exactly right the first time, but at least then you have something to compare with. Good luck!