I don't have an eye for wide angle so it's difficult for me to recommand one
As for the 35mm f1.8, I purchased one last fall and I'm very pleased with it. You will have to get closer of your subject to fill your frame than if you are using a 85mm or a 105mm though. Some people might say it will get your subject uncomfortable, but I found this prime more versatile (and the price was also very interesting).
Here are some pictures:
Hope this help