(12 Jan 2014, 12:28 pm)andreos1 wrote Argyle Street by Central Station is always jam packed with buses.
There is a one way loop around and under the station and as well as the local services,you get the independents and distance stuff.
Buchannan Street is also good.
There's a lot going round St George's square, on towards St Vincent Street. The airport express services run around there too. North Hanover Street is also good for grabbing the to and from Buchanan bus station.