I found that Virgin Australia were selling much cheaper tickets for Singapore Airlines flights than Singapore Airlines itself. I flew Brisbane to Singapore and then Chennai, all in Singapore Airlines. All those flights were excellent. The food was good, except the Chennai to Singapore sector, considering it was leaving India we were given pasta rather than curry (a very small thing but I'd have loved a curry).

I few Sydney to London Heathrow via Singapore in Premium Economy. Having booked the ticket online I went on to the Singapore Airlines internet site and was able to select my seat and Book the Chef meals. It was really smooth. Same at the airport with no queue for the dedicated Premium economy checking.

This was one of the best long haul in economy flights I've ever flown. The service is great, a regular drink tray with waters and juices being brought to you to keep you hydrated. The food was decent for economy class standards and they also offered a small snack (a sandwich) half way through the flight, and then there was a second meal.