Beta testing squarespace 6
Not public yet, but I've been trying out the next version 6 of squarespace websites. They're definitely portfolio friendly and really intuitive. Check them out if you're looking for a new portfolio site, especially when they launch version 6. I don't know when that will be, but I'm betting it will be fairly soon.
I've attached a link to the test site I've been building in squarespace version 6.