Storx
Yeah get that, tbh when I was talking about having a uniform fleet this is when you badly need it. It works at Blyth as everything Max similar at Ashington as the X21/X22 just work by itself with the X14/15/18/20 doing the same up North which are all Max.

Could understand how it's a bit of a nightmare at Durham though where some are Max, some are Frequenta, some are Sapphire and some are nothing. Similar with Jesmond where you have eco, Sapphire, Max and normal and usually they're just all over the place. 

It seems going forward that they've done this now though with the standard livery pretty much being Max - if they ever actually refurbish anything into it.

The issue with Durham, in my experience at least, is that they don't even seem to make an effort to route brand correctly. With Blyth and Jesmond you can tell in the morning that they've generally tried the best they can (even if it's just the brand, and specific route branding is still all over the place), but throughout the day they prioritise service punctuality levels over anything else. 

Durham always seem to just put out whatever they fancy. When I got the 6 the other day, both 7456 and 7494 were on there - neither even branded, let alone "Sapphire". 7519 and 7521, Sapphire E400s, were on the MAX 48/X46, alongside 7455, ONE(!) X46 B7TL and then a handful of single decks. The X12 (MAX) that day had, from Durham, two standard spec Pulsars (1409/1510), two Sapphire Pulsars (1517/1524) and a Streetlite (1596), and one MAX Pulsar (1482). This isn't one or two incorrectly allocated buses, it's leading drivers and depot management giving the bare minimum and having zero pride in the work they're doing.

Arriva Durham County, generally bar Stockton, have always seemed to operate at a lower standard than Northumbria have - be it in vehicle appearance, driver friendliness or pride in what they're doing. That's by no means to say Northumbria are always good at those things I've mentioned, but from a passengers perspective I always feel more welcomed by drivers north of the Tyne - and that the buses operated by those depots have a bit more TLC.