Considering a Leviathan

I'm at a point with the 30k army where it's almost playable, in the sense that most of the models are assembled.  It's time to start thinking about where I want to go with the army.  I'm seriously considering getting a Leviathan Dreadnought.  They're pretty badass looking and seem to represent the intermediate stage between the Contemptor and the more modern Box Dreads.  I can get one from our "Russian friends" for $59 with free shipping.

I'm also considering going with a Legion Sicaran Battle Tank.  They're just damned cool looking.  It also doesn't hurt that the Forgeworld sample is painted up as an Iron Warriors tank...

I'll probably keep thinking about it.  The other possibility is to just steer clear of the heavy hitters and get a couple of Rapier weapon platforms.  I'd probably be looking at the Quad Mortar as it seems to fit the Iron Warriors fluff the closest.  Time will tell.  I have plenty of time to think about it.