Pyrs are great dogs and like all breeds, they have their upsides and downsides. Keep in mind, just like people, each dog is an individual and as such has their own quirks and personality. This is just some general info.
Pros
They are great family dogs and very patient with children, if socialized properly.
They are very playful dogs and love to spend time with their family.
They are very smart.
They are extremely friendly to everybody they meet.
They are big gentle lovable furballs.
They are good guard dogs and alert you to everything going on and are protective and territorial.
They have beautiful, medium length, thick, fluffy, fur.
Cons
They are very smart, but very independent and stubborn and seem to think over whatever it is you want them to do, prior to doing it.
They wonder what is on the other side of the door, gate, fence, street, town, county, state, country and will try to go find out given the opportunity.
They are good guard dogs and alert you to EVERYTHING going on that they think you need to know by barking, a lot and can get protective/aggressive if THEY think it is needed.
They have beautiful, thick, fluffy, fur that turns into beautiful, thick, fluffy tumbleweeds.
They have a really heavy undercoat, most of the year, that is very hard to get good and wet to bathe them, and very hard to get dry afterwards.
They are relatively large, heavy dogs, and very strong, meaning they have to be well trained when young, as training an adult can be a rather demanding physical challenge.
I know it sounds like I am being negative, but I am just trying to be realistic. Every breed of dog has good and bad characteristic s and no one breed of dog is great for every person, family or particular living arrangement. I work with pyr rescue here and we will take in close to 150 dogs just in our state this year. "He/she was such a cute little fur ball when we got him/her, but now he/she is just so big. He/she eats so much food! The fur just gets on everything! The barking is driving our neighbors crazy and we can't take it anymore. I can't even walk this dog, he/she pulls me down the street. My kids can't roughhouse with their friends anymore, the dog jumps in and growls at the other kids. Everytime we open the door, the dog runs out and we end up chasing he/she down the street." I just think everyone thinking about any breed of dog, should realistically look at the breed characteristic s and determine if they want, and are willing and able to live with those traits in their dog. We went from Springer Spaniels to what we have now and it has been a year of major changes, accomodations, tried patience, many fights between my hubby and me, and a lot of learning about these breeds. I would not trade my dogs for all the tea in China, but it has not been an easy year and we still have a way to go. Granted, our Pyr was a year old when we got him six months ago and had never had even basic obedience training. He was very sick and not housebroken, still isn't totally reliable in the house and is still learning basic manners, but we love him anyway. Good luck with your decision and I am sure you will make the right one for you and your family.
Kathy