I'm happy with them, zenfolio was not my cup of tea, all zen sites look the same and menu location is not constant over the entire site.
Not sure how/why people would flock to your site, your photo business customers? As gonzo said, no one will find you.
Deviantart is an other good site for more artistic things, but again, there are thousands of artists on there, chances are about zero that anybody will stumble over your work and order some.
If you have a way to point people to your site, smugmug is just fine. I've never set up pricing on my site, but I'm pretty sure you can charge what ever you want.