I have had a zenfolio account for a long time and recently changed over to smug mug. The driving factor in this change was that there was a visible difference in quality between the images online. The Smugmug images were closer to my original images. That swayed me. The process of moving the images was straight forward and I had no problems.
I really like the feature in smugmug where by the exif data included the option to show the location on the map. I have a lot of photos without that information but from now on I should be able to include it.
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