Very good tour. Guide excellent and informative. The temple is definitely worth seeing - it's beautiful and huge (although still incomplete) - and the cable car is fun and offers good views of Penang. Like all tours, it seemed a little rushed, but this is because you're seeing so much in such a short time period. Also, the air-conditioned van was a god-send haha!
The castles on this trip were very impressive and oveall the trip was alright. We had trouble understanding our guide at times and felt that the visits to the castles were very rushed. We also didn't really enjoy the lunch included in the winter tours. Because of these issues, I would recommend exploring the castles independently of a tour!!