After 2007 though, the 308 had what?
2013 they got the hybrids and remained that way for several years, now its a case of whatever is spare gets chucked on it, which leads me onto my next point, if the 306/308 suffers from various issues, people will be forced to use the 307/309, and vice versa, which could end up turning things a bit sour between GNE and Arriva