With my own models, speedpainting is my best friend. Lately I've been thinking about a necron + gk list. It's kinda hard to justify fluff wise an ordo xenos inquisitor allying with necrons. He's just some radical inquisitor. Here's the list.
PLAYER NAME: Aleksi Lehtiö
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PRIMARY DETACHMENT: Necrons
HQ1: Vargard Obyron, warlord = [160pts]
TROOP1: 10 Necron Immortals, tesla carbines = [170pts]
TROOP2: 10 Necron Immortals, tesla carbines = [170pts]
TROOP3: 10 Necron Immortals, tesla carbines = [170pts]
TROOP4: 5 Necron Warriors = [65pts]
FA1: 6 Canoptek Scarabs = [90pts]
HS1: Annihilation Barge, tesla cannon = [90pts]
HS2: Annihilation Barge, tesla cannon = [90pts]
HS3: 2 Canoptek Spyders = [100pts]
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SECONDARY DETACHMENT: Grey Knights
HQ1: Ordo Xenos Inquisitor, rad grenades, psychotroke grenades, psychic communion = [85pts]
ELITE1: Psyker, 2 Warrior Acolytes = [18pts]
TROOP1: 10 Strike Marines, 2 psycannons, psybolt ammunition = [240pts]
FA1: 10 Interceptors, 2 psycannons, psybolt ammunition = [300pts]
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FORTIFICATIONS:
Aegis Defence Line, quad-gun = [100pts]
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TOTAL = [1848pts]
A couple of things I've been thinking of. First, it's always a good thing to have some blasts. This is something people were already saying in 5th, but with random charge distances short range infantry would really rather bunch up to get everything in range, trying to minimize the risk of getting charged. Blasts can hurt that. Second, I have the interceptors and obyron's squad that can move up t1 pretty much anywhere and go for first blood. I'm really mainly worried with how the list will cope with proper flyer spam. Played one game against a ba double raven list but my quad gun exploded one raven when they entered and my opponent couldn't roll 2d6 armour pen with his multimelta, so the game ended pretty brutally. Need to do some further testing but I like the moblity (for firstblood, linebreaker and to counter tanking characters). It also has some interesting elements, not being too one dimensional (even though it's a pretty clear shooty list).