500px is great for uploading photos and getting them critically analyzed by popularity let's say. I tend to use it prior to uploading them onto my website to see whether they are publicly appealing rather than just to my eye. When it comes to zenfolio, i highly recommend them. I have been using them for 3 years now. I tend to sell more photos on redbubble however. I designed my own template which I quite like but their own templates looks great and are quite smooth to operate. This is my zenfolio website. Have a look and see what you think.
MATT BISHOP PHOTOGRAPHY