More than annoyed, reached the end of my rope!

Sounds like you have approached the neighbor(s) already. If civil and open communication doesn't produce the peace and quiet we all deserve from our neighbors then hit them in the wallet. My neighborhood has a team of community service officers that will ticket homeowners if they witness/hear a dog barking and no one is home. If someone is home they will tell the dog owner that persistent barking can bring a fine. If your neighbors can't respect your peace and quiet see how much money they have before they start respecting it. I hope you have something like this to apply.

Oh, and enjoy your next 690 rip!