Much more solid and refined then 1G TSX. DSG is sweet! No more torque converter means it eliminates that annoying high rpm but you don't feel feel the TSX has really propel forward feeling. Quick down shifts, rpm raises, and the car just goes. A much better feel than regular automatic transmission.
Suspension is comfortable but not all out comfort. Chassis is solid.
Lots of bells and whistles. Large sunroof. Quieter cabin. Wide tires. All good!
Just the $$$... doesn't seem to justify the cost especially when 1G TSX doesn't worth much trading it in. The difference in terms of quality and drivability increased, but not enough to tip the scale to make the decision easy. The C-class or the IS being RWD might be a better choice.