Dear all this is my first message so please bear with me. Currently I own a 900 Gls and will be looking to purchase a 9000 maybe CS as a replacement. Could any body advise me on what to look out for and if there are any makes or types with challenging characteristics or foybles

Hi Jools, The long running 9000 Carlsson thread has a link in reply 5 to 'Quasi motors' web site. This has quite a bit of info on 9000 'problems'. Worth a look.