I have actually gotten to "borrow" quite a few breeds in a sense since being a dogsitter. I was very close to the Rottie that I watched for 2 years and helped to raise him. I actually think I could live with a Rottie, I really connected with him. He was easy in a sense, but a challenge in another. He really just had a good soul if that doesn't sound too cheesy. Only thing I could have never lived with was his resource guarding and somewhat human aggression but I know that's not a breed trait per say and was likely just him and the way he was raised. But yeah out of all the dogs I watched for long periods of time... he was the dog I really just "connected" with. However I most likely wouldn't seek one out because of the short-ish life span and health issues. But it's a breed that, if thrown into my lap, I could easily live with.
Then, on the flip side, I definitely know what kind of dogs I'm NOT willing to live with also. Beagle mixes and me don't mesh. I've been around a few puggles often, I also helped raise a Boston Terrier/Beagle, and now the same owner has a JRT/Beagle, my grandma's Foxhound... just... not the dogs for me.
So dogsitting has actually given me quite a taste of a few different breeds and to be honest most of them don't appeal to me (as in I wouldn't go seek them out to purchase). If anything, it's made me realize how picky I am with my dogs.