Help?

We are trying to decide if we need to call in some help for our backyard. There are certain areas we are just not sure what to do with. I'm going to call some landscapers to come look at it and see what they can come up with and see if it's worth the money to have them do it for us. The only resource I have is the phone book. If anyone knows of a good reputable landscaper, could you let me know? I'd rather use someone that's referred, than a stranger.