[FlatFender]

Im looking at the zion 737, What other hardtail options are out there? I ride a Large

 

[MondoRides]

I've been eyeing this one...

Redline Monocog 29er
http://www.pricepoint.com/detail/16808-175_RED297-3-Parts-60-Frames/Redline-Monocog-29er-Frame-w/-Fork-2007.htm
$160 is a pretty good price for frame and fork but you can also find the complete bike for a little over $400. Mountain Bike Action put this bike on their top 10 list

 

[Mr. Doom]

Cheaper and a wee bit lighter/stiffer. Motobecane 29er disc $125 shipped

or SS with V mounts. same price.

Cheaper to buy a complete from Bikes Direct after you add wheels etc. but if you have components they could be an option.