I think looking at the TTX, Enviro's could last but the X9 / X10 alongside the X93 are the killer routes in the North East that have a particular niche.
Although the B9TLs have proven reliable so far on the X93 as well as the Enviros on the X18, the X9 / X10 is a constant high speed route that needs vehicles with taller gearing ratios to reduce stress on the engine plus wear and tear.
The only service vehicle that would've been capable of the above was the Palatine II with the D10-245 unit.
RE: Go North East: Latest News & Discussion - December 2016