If you think your meta would allow it, I would strongly recommend trying to get ahold of a Brass Scorpion. It's a gorgeous model, very khornate, not overpowered at all (no strength D, no blast bigger than 5") but a close combat monster, extremely fast and great fun to use - it's anti-psyker, has a doomsday reactor that deliberately overloads when it dies and can stomp it's way around the board beating almost anything you can think of in close combat. It's also pretty durable and a great fire magnet, which will protect your fragile troops while they get ready for some slaughter.
You might think it's incredibly expensive at £140, but for the points it's actually a pretty cheap unit - more points-efficient than soul grinders and flesh hounds. Plus it's a great army centerpiece, and chrismas is coming up

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