(09 Aug 2014, 4:18 pm)DaveyBowyer wrote Lesson two: Buy buses with big engines! GNE didn't buy double decks between 2006 and 2011 until a manufacturer released a proven, reliable, big and powerful engine capable of handling most routes after the problems with the B7TL's from both X10 and 724 batches.
Are you sure that's the real reason? May have not bought deckers, but they certainly invested in other areas during this time - Citaros, Omnis and Versas for example.