Two rules to remember, that I've learned the hard way in my short domaining life. Try not to have repeating letters in the name like djssets.com. Not a hard set in stone rule but one to me aware of. Number 2, try for the dot com as much as possible. Though sometimes, as in your case, the DJsets.us seems to work well together. As far as value. I'm proably not the one to comment on that because I'm always higher than everyone else. Also rule number 3 make it memorable like DJparty.com (probably taken) has much more of a ring and easier to remember than djsets.us or Djssets.com. But a domain is only worth what someone is willing to pay for it and I guess that's rule #4. Good luck!