jamiecopeland wrote:Is a single Windstopper garment a good idea for windy conditions or is more layers the better choice?
the answer is, as ever, it depends on the weather! If its a warm day, but windy, then any lightweight wind proof jacket / top over a baselayer should be ok, If its getting chilly and your fleece isn't windproof them a lightweight wind proof over it will help, but as mynthdd2 points out, windstopper fabric tends to be not very breathable, so I'd probably use something else and there are loads to chose from.
So going back to your original question, more layers, less "windstopper" more breathable windproof.