I think that the days of 'heavy duty' single and double deck buses are becoming numbered. When the call beckons for 6043-6048 to be replace, I think it will be highly likely to see StreetDecks replacing them. Although not ideal vehicles, they seem to do the job OK and only time will tell.
The same goes for Streetlites continuing the discussion and although they have a small engine, it doesn't necessarily mean that they'll prove unreliable over long distances. Looking at Arriva's Enviro 400s out of Ashington Depot, with the exception of 7501-7505 which had hard lives before going to Ashington, the majority of them have proven themselves particularly the Euro 5 examples (7528 - 7534 in particular).
RE: Go North East: Service Suggestions