I'll probably get called a BD shill, but whatevs.

Gravity Zilla Monstercross.

Pros: Cheap, fits big tires, aluminum

Cons: Components probably sub-par compared to your other bikes, no idea about toe overlap, aluminum.

Figure assembly or a tune-up at a shop if you're not into it, and you get a complete bike for less than the cost of other frames you're looking at.