Autoglym I found very good and indeed is very similar to the auto finesse but I found the following -
when it rains the autoglym can leave a streak from the plastic down any painted surface
The autoglym doesn't dry as well so it allows dust to stick to it
The autoglym tends to stay a little tacky so subsequent washes seem to "coat" the wash mit.
Could have changed though as I stopped using the autoglym about 5 years ago - I still have some in the garage, tucked away at the back of the cupboard somewhere I'm sure. LOL
I still use a lot of their other products such as glass polish and extra gloss protection so not rubishing their products.