After trying SmugMug for a few days, I’ve decided to keep it, although I’ll still continue to use Flickr.
SmugMug has several pros & cons in comparison with Flickr. SmugMug lets you create really beautiful galleries where you can customize both the color theme and the photo layout. The default layout shows thumbnails on the left side with a large view of a single photo on the right. You can even let your visitors choose which layout they want to use.
SmugMug does have some significant weaknesses, though. On Flickr, all of your photos appear in your photo stream and it can also be included in multiple sets or group pools. SmugMug doesn’t have a photo stream; it has albums and every photo can appear in only one album. Flickr also feels more like a community.
For general use, I prefer Flickr, but for a professional, SmugMug seems like a nicer way to show off your best photos.