The THS is similiar to the APR. Money no option its the THS and the APR cooler everyone would be going for.
However on a FR I think a THS and APR cooler would be wasted, hence the S3.
There have been some issues with the forge twintercooler in hotter countries, the twintercooler had been restricting air flow to that of the AC and Gearbox cooling system sending a TTS into limp mode, ie stacking of coolers. Granted its the DSG system that got too hot. Cant remember what country this happened in, think it was ozzie land.