This one also has a poll, where you can decide which are the two of the best bus model in your opinion. It will also include some bus mods, because I believe most of us who does own the game won't have vanilla game. Also you can give a short reason why you do like the two specific bus models.
You can discuss generally about the game (what's good, what's bad), discuss about the mods and DLC available and say your opinion of what you want to see in the game (your living region map, bus, AI model, any other what is related to this game).
Let me start this to give you better clue, what I'm meaning.
My first option is the Scania CityWide. This is almost the newest model that Scania has released, and it looks great, plus my hometown does have 13 of them, from which 12 runs with natural gas.
The second one is Mercedes-Benz O530 Citaro (O530G is articulated), this is because of my enthusiasm of Mercedes plus even if it looks kinda square-ish, it's still Mercedes
The one that I have is 15-meter long 3-axle version with steerable rear axle. Rated from Euro 3 to EEV, so they're pretty clean engines, except for Euro 3.The Berlin - Spandau map is pretty good, the most line what I've driven is 5 from U-Bahnhof Ruhleben to Nervenklinik and vice versa. Also in Spandau 1994 line 130 is the same. I've also done a few times the line 92 from Stadtgrenze to Freudstraße.
Grundorf is very small map, so that'll serve me as a "test" map, where I'll just test out the new bus mods that I've downloaded.
Yesterday I did download the Städtedreieck map which has 13 rural lines and 5 night lines and a few express lines. For that map, the CityWide might be too long, but if you can spin the wheel pretty fast, then you should be just fine. I did a run on the line 69 Ermersrichter Straße to Griebsbach Bahnhof, which was very interesting and tough route with very sharp turns and driving full speed with the Scania on the Autobahn. Right now I just started the line 66 from Donnerhain to Kreuzinger Brücke with the 15-meter Merc.
Only bus model what I really want to have is the VanHool Astromega TDX27 (image below), that'll fit for my future plans of the game.
I hope this opened something for you
