I'm complacent with my dogs and I'm not sure what to do next. Help?

I am sure there are lot of things your dog cannot do. Can they pull a cart? Can you and the dogs do freestyle? Can your dogs do agility - and would they like to? Are you interested in doing obedience or rally? How about tracking or nose work? Interested in having therapy dogs? Or dogs who can skateboard? Of course the dog might not be suited to every dog sport, but the bar is as high as you want to put it.

It doesn't necessarily mean that you should not get a third dog, but first think of a challenge you want to meet (e.g. compete with a dog in agility) and if you adopt a dog, get a dog who is suited for that activity.

Edit: Why not do something with the dogs you actually enjoy and where they need skills. It seems to me that the problem is that you don't really enjoy doing things with the dogs which would challenge them further, not that there isn't any challenge or that the dogs wouldn't enjoy the challenge. That's something you have to sort out with yourself.

Keep in mind that your question was whether you would get bored with the new dog after a while. From what you write, I would think so.

I've been where you are now and I found, for me, that the best approach was to challenge myself. I taught all of my dogs to crawl, to rollover, and several other tricks. Did you know that the average person is far more impressed by a dog that can do things like "speak" and "high five" than a 30 minute long down? I made a mini agility course in the yard and taught the dogs to weave poles and go through tunnels and jump sticks and other stuff. I changed the course at times to keep it interesting.

It was a bit of a challenge because some of the dogs I had were generally known to be "hard to train" or "stubborn" but they all learned and we had lots of fun. Keep finding new things to do with your dogs. Take them new places. It's up to you to keep it interesting, not to keep getting more dogs.

If you are getting another dog just because because you find the other one's boring, then don't. I also doubt you have researched addison's. It is a very serious disease. It is incredibly difficult and expensive to manage. Leave this dog for someone who actually wants a dog, not just entertainment,

Since dogs bore you so easily, please don't get another one.

What exactly have you trained your dogs for that you're so bored? Do they have their GMOTCh in obedience? How about Rally, Tracking, Flyball, agility, dock sports? How many titles do these dogs have that you can't think of anything to train them in?

Then don't get a dog.

If I was you I would get him, You sound like a good owner and as its 7 you can give him his forever home.

do not get another dog ....just that easy