I have what I'd call one of both.
Summer is good. Very good. She is one of those dogs that seems to know what you want before you ask. She never gets in anything ever. She's just always good and sweet. Never demands anything and never has (though I missed her first four years). I'm pretty sure you could never walk her and as long as she got hugs and snuggles and food, she'd be happy.
That said, she's still a very excitable dog who can have a lot of energy to blow off. Even at 10 years she impresses the agility folk with her energy level. In most her classes, she's one of the most/the most frantic dog. She is kind of demanding in a way- she's not a dog you could ignore very well. She is very social and needs a lot of social interaction. But she's not complicated. She likes people and food and to run. She's confident out and about. Never a worry there. She did get in the trash once recently and it shocked me!
This last tricks class she also stole a big chunk of ham from the training bag!
She can also be a dog you need to wrangle on a leash a bit more just because she is so outgoing and over the top at times... Like at petsmart, her natural inclination is to climb the shelves and jump on the checkout counter.
Mia is the dog you need to watch to make sure she doesn't get into things. It used to be constant but she's better now to a big extent. But like... trash? food in pockets? Food locked in crate in bag in back of your car? Mia will get it. She is very determined and if she wants something, she will get it. She ends up on tables and on counters all the time. SHe's a problem solver and has a high food drive so that has management issues going on.
Mia unlocks crates, has chewed up a LOT though that was when she was younger, she overstimulates easily and tends to go a lot sharper than Summer. Redirection on things and other dogs is an issue... I've never had a dog that attacked trees when you let them out to pee prior to her. Mia needs a lot more interaction, she's more demanding, not as even, more determined, etc. Mia's life has a lot more direction coming from me because she needs it. Impulse control exercises, me giving her a thing to do so she doesn't try to bite down the tree, etc. In public ironically Mia comes across as very low key and better behaved because she's so aloof with strangers. She is superb on a leash in any instance.
Both of mine are dog selective. Mia is worse. Both of mine have been fabulous off leash dogs from day 1. In that way they're easy as can be.