Hi,
I'm a window cleaner and like to think I know a little sumthin' sumthin' about cleaning of different surfaces.
So here's my top tip for perfect, smear free finishes on all indoors surfaces. We're talking mirrors, speakers, A/V stands as well as TV screens.
Firstly, forget any 'cleaning product'. It doesn't matter if it says 'smear free' or any such nonsence. Don't buy them. (I'm only talking about internal serfaces here. You need cleaning solution for external windows, but that's a different story).
Secondly, go to http://www.wintecs.co.uk/catalog/product_info.php?cPath=57_24&products_id=915 and buy two of the cloths. They're a few quid each, but you'll never have to buy them again as for domestic use, they last forever!
Thirdly, how to clean: Wet one of the cloths under the tap (hot or cold. Makes no differrence) and thoroughly wring out all excess water so the cloth is 'damp'.
Then use this cloth to wipe over the surface you are cleaning.
Then, use the other cloth, which is dry, to buff off the water using gentle, circular motions. The whole cleaning will take a minute, tops.
VOILA! Perfect finish, every time.