ImCreator (formerly XPRS) has lots of slick looking, responsive themes. You also get to play around with the menus and arrange it just the way you like it.
Unfortunately aside from the nice looking templates there's not much to recommend it. The editor is very glitchy and confusing (although it does look nice, it's not very intuitive) and the website elements are pretty basic (forms, blogs, store) are all lacking. There are no membership or multilingual options either/
There's a cery limited free plan, with only 50mb of storage available. Also, when you switch a template you lose your content and have to enter it again.
A big plus is that you can export your website and move it elsewhere, which is unfortunately not that common in the website builder world.