Lords of War in Tournaments, need advice

[brother_contagion]

Does anyone have any advice on using Chaos Lords of War in Tournaments (assuming they are allowed)? I've been looking at getting a Lord of War, but haven't decided on which one I'd like to have. I have the the Imperial Armor Apocalypse book and have looked at the Escalation book, and I was wondering about these three choices: Lord of Skulls, Brass Scorpion, and a Imperial Superheavy Vehicle (assuming Chaos has access to them, I don't know if Lords of War follow the Allies Matrix or not).

 

Are there any suggestions on the strengths and weaknesses of the Lord of Skulls and Brass Scorpion? If I can have access to Imperial Superheavies, are there better alternatives? As much as I'd love to take a Warhound or a Reaver Titan, I'm wanting one that would be dollar friendly! lol

 

Also, what's the best way to make a list with a LoW? As in, should you create your list to support the LoW's abilities/disadvantages? Or should your LoW not affect what else you choose to be in your list?