I reckon you could get away with any Warwick to be honest, although Thumbs do cut through anything and everything VERY nicely.
The only problem, at least for me with the Thumbs is the reach, if you're tall enough, or are happy to wear the bass low, they're brilliant though.
There's a few for sale right now on the forum too, unfortunately you just missed a bargain price on a Dirty Blonde
There's always this though, doesn't get more metal >> http://basschat.co.uk/topic/257336-warwick-vampyre-sn-4-price-drop-l850-ovno-shipped/page__p__2751447
Eude