All my dogs (3) have been some sort of mixed mutts.
Riley, RIP, was a Border Collie mix.
Dyce is also a BC mix, and she's getting old, 13.
Gaitz is an Aussie Cattle dog mix with more personality than a lot of people I've met.
They've all been "rescue" dogs to a point, and they have all been great dogs.
Pure breed show dogs are overrated in my opinion if you just want a family member/pet.