First time on TG A380 HKG-BKK yesterday. C-class is among the best there is. Single seats right next to window seem best (A&K, uneven row numbers). Very good IFE system. Decent bed. Lots of privacy.
The main problems were that four bathrooms were constantly occupied and that the service was not very good - oh and that the supposed bar was not used and was, in any case, not accessible as that was where the FAs parked their trolleys. The cabin size does not help in terms of service. But still much much better than LH A380.