Alright mate,
I also have a non GT Zed and to be honest I actually prefer the cloth seats to the leather ones... They hold you in the seat better compared to sliding around on the leather ...
The GT Spec Zeds have heated leather seats, cruise control and a bose sound system ...
The buttons on the left side of the steering wheel are for controlling the head unit and the ones on the right side are for Cruise control on GT Zeds ..