I'm not going to berate the Autoglym stuff, cos i've been using it for years, with decent enough results.... but,
I've spent the best part of 5 hours this afternoon washing, drying and cleaning my lc using Meguiars 3 stage cleaning/polish and carnuba wax treatment's and all i can say is WOW..... bloody awesome finish, and probably 80% better than Autoglym.
I used to do car valeting as a job many years ago, and I've never seen such a deep shine on any car before useing this Meguiars stuff, it isn't cheap the 3 stage stuff cost's about £7-8 per bottle so a tad under £25.00 for the 3; but amazing, I'm seriously impressed with this stuff..
I'm going to stick some pic's of the finished car up on a new thread, but they really don't do it justice i'm affraid, you'd really have to see the before and after car in the flesh....