I'm buying a new lense but cannot decide which one..canon 50mm 1.4, or 1.8, or possibly the 85mm 1.8. I'm looking for a lense that will preform well outdoors and will give me a nice bokeh. Any thoughts? I aware there is plenty info about this on the net but I know there are some very talented photographers in here and would really like to get some opinions flowing..thanks in advance.