easybus and Stansted

[AnkleBoots]

It looks like you can book either National Express or Airport Bus Express tickets through easybus - and there is sometimes a heavy discount on National Express tickets.

Any disadvantages to booking through easybus? I think they allow 60 mins flexibility either side of the booked service, is this better or worse than booking National Express directly?

Are there any differences between National Express and Airport Bus Express in terms of reliability etc?

Thanks

 

[Bletchleyite]

Do they actually reserve you a seat on NatEx as booking with them directly does, or are they effectively standby tickets relying on the fact that the airport services tend to have excess capacity and are very rarely full?