The 85mm 1.8 is a great lens for those on a budget, offering a lot of the performance of the 1.4. However, if you have the funds, there is simply no beating the 85mm 1.4. It is always a joy to use, will provide you with some of your favorite images, and I wouldn't sell mine for the world.
Fast F/1.4; Unbeatable Bokeh; Pro-quality build
Not AF-S; Heavy due to pro-quality build