The Savage/ S40 is a pretty unique motorcycle actually. There isn't anything out there directly. comparable IMO.
However if similar performance is the criteria this one comes to mind. Less expensive, a bit lighter, less than half the displacement but almost as much HP. And it's a thumper.
http://powersports.honda.com/2015/cb300f.aspxI'm pretty sure the KTM 390 will out perform it by a significant margin, but you can probably actually find one of these to buy. The only KTM dealer within 100 miles of me got 2 390 Dukes last year, sold both, and has no idea when he might get any more

The little Honda also has three things that I wish my Suzuki had, A tripmeter (I think it might have a fuel gauge or a least a low fuel warning light) cast wheels/tubeless tires - pick up a nail and you've at least got a fighting chance of plugging the tire and getting home without a truck or tow) and somewhat better range on a tank of gas.
I'm not in love with the looks, but if I was looking for a new bike to do the kind of riding I do on my S40 this one would be on my short list. Ya, cant tell what it looks like when you're riding it anyway.