I know there are a few of these threads on here, and I've gone through them, but here's specifically what I'm looking for and I'm hoping all you knowledgeable friendly people can help me!

Size: XS, or petite (I'm 5'1")
Hardtail (I've ridden & raced FS, and don't care for the "cushy" feel)
Disc Brakes (stopping power!)
26er (I haven't ridden a 29er..can be convinced if that's what's good)
~$900-1000 (max 1000)

I ride cross-country on singletrack trails that have some gnarly rooty fun downhills and also steep, long uphills..so the lighter the better, I think.

I have gone through a few manufacturer's websites, but it's frustrating to find a bike that might be within price range and specs that are nice and then notice they don't have XS geometry available, or some other spec I'm looking for. I am not bent on any particular brand, but I would like to find one that is available (or can be ordered) from an LBS (don't want to purchase online!).

Thoughts? Ideas? Advice?

Thank you in advance!!