(09 Jan 2020, 7:59 pm)L469 YVK wrote B9s are perfectly fine and unless you were on a dodgy one, the D9B just makes more of a humming sound than anything.
Still very surprised that these along with the Fab 56 B9s weren't replaced with StreetDecks with all of the B9s going X-Lines. The B9s in my opinion are more suitable than the StreetDecks particularly on the extended X21 as well as the X47/X70/X71.
I must admit, I do find the noise to be quite relaxing, it's quite a nice rumble!
The thing is though, the B9s feel very cramped compared to the StreetDecks, I really wouldn't like to spend 2 hours on one
The main issue with the StreetDecks is they're just not suited for the motorway parts of the X21, granted, the 67 plates are infinitely better than the 16 plates, but the engine still sounds like it's on the rev limiter. It seems like it's more of a gearing issue than anything.
The only other issue is the ride is quite firm, but it doesn't help that the roads round here are absolutely dreadful.