When I see you asking about renting an endure rig I am not sure if you are going to like riding in Phoenix. The riding is great fun but far more XC with very fast flowing trail that are well suited for a hard tail 29er. That said we found some black trails in white tanks that were a little more challenging. They would be blue at the most in Colorado. I love riding in the phoenix area as it challenges you fitness level riding skills not so much.
When I see you asking about renting an endure rig I am not sure if you are going to like riding in Phoenix. The riding is great fun but far more XC with very fast flowing trail that are well suited for a hard tail 29er. That said we found some black trails in white tanks that were a little more challenging. They would be blue at the most in Colorado. I love riding in the phoenix area as it challenges you fitness level riding skills not so much.
No offense man but you haven't ridden enough of south mountain if you think it is all hardtail 29" trails. Geronimo and national are great trails along with holbert if you are feeling brave. Even Bernard Kerr has came to south mountain to shuttle geronimo for Pivots edits. Let me know if you want me to show you around!