Go for the Unger large microfibres, I think they are the best on the market, they are used dry, once they get too damp they leave smears.
We buy them in packs of 5 for £20 and I sell dozens of them to my customers for £8.00 each.
They are ideal for window cleaning and general polishing, chrome and ceramic come up gleaming with them, customers love them.
Last week I sold 5 to a lady from Cheltenham who was on holiday up here seeing her sister!
When you wash them, don't tumble dry them, as the fibres tighten up and they are not as effective.