I think adopting an adult dog would be a good option, since you have no real "tricky" requirements. You just want an all around good dog and there are lots of those out there that would fit the bill. And one way to be sure you avoid reactivity (as much as you can) would be adopting an adult. Even a well bred puppy can end up with reactivity, due to either nature or nurture or both. Yes, it's true some rescue organizations can be difficult. However it isn't fair, IMO, to write them all off based on a few bad experiences. If it's something you're interested in, I'd put some time into looking into rescue organizations around you (and also not around you - transporting dogs long distance is a really common thing, nowadays). Unlike with a breeder though, you probably don't want to actually contact them until you are pretty close to being ready to adopt. I would reach out when you are ready and send out a mass email, using the term loosely, to a handful of rescues I feel good about. I would tell them what I am looking for in a dog and ask them if they have a dog they feel would be a good fit. See who responds to you and then progress the correspondence.
All that said, as far as breeds go - Labs or a golden would be a good fit. Possibly GSD, and I'll throw in Corgis too. I'm sure there are tons of other breeds that would fit the bill too, most of the ones I am thinking of are either too big, have grooming requirements beyond "easy" and/or are likely too high energy for your situation.
All that said, as far as breeds go - Labs or a golden would be a good fit. Possibly GSD, and I'll throw in Corgis too. I'm sure there are tons of other breeds that would fit the bill too, most of the ones I am thinking of are either too big, have grooming requirements beyond "easy" and/or are likely too high energy for your situation.