What would be the ideal geometry for steet trials. ZHI Z2 Wheelbase: 1080mm Chainstay Length: 380mm BB Rise: 30mm Head Angle: 72 degrees OR Adamant A1 (Long) Wheelbase: Short 1070mm, Long 1095mm Chainstay Length: 375mm BB Rise: Short 15mm, Long 25mm Head Angle: 72 degrees Centre of BB shell to top centre of head tube: Short 665mm (26.25"), Long 675mm (26.5") OR Echo Control '07 (Long) Wheelbase: Short 1060mm, Long 1080mm Chainstay Length: 375mm BB Rise: 20mm Head Angle: 72 degrees Centre of BB shell to top centre of head tube: Short 655mm (25.75"), Long 675mm (26.5") Cheers Ashley