I'm not sure where the zenfolio guys are.
You should take a look at zenfolio as well. I'm a very happy Smugmug user, but there are a lot of very happy zenfolio users as well. The services appear to be very competitive on features. I think the Zenfolio feature that Mickey88 touts the most is that it gives you a choice of printing companies, one of which (mpix) he prefers.
and couldn't get much help from the site( microsoft office live) but i asked zenfolio and they actually went to the microsoft office forum to find the answer for me( after i had emailed microsoft a number of times) then emailed me back..i have probably emailed them 10 times over the past 3 days( no exaggeration) and they have been fantastic...so for any other computer illiterates...they are really great!It was mentioned that zenfolio has the option of printing to mpix - who does Smugmug use for their printing?
smugmug uses ezprints..
zenfolio uses ezprints and mpix, so you have your choice
if you decide to go with zenfolio you can use my discount code.
XE1-C1X-2JF
They added a new "feature" which gives you square thumbnails in your gallaries. I personally hate it, so went searching to figure out how to turn it off. I found this information.
http://www.dgrin.com/showthread.php?t=87961
Hope it helps someone be a little less frustrated than I was.

My biggest problem is that a new feature should not be made the default, if it is something that is going to change the look and feel of what you have set up, you should have to choose to do so, not choose not to do so. just my 2 cents.
what you say makes a lot of sense, did you tell their customer service that