Honestly, I think it depends on the individual. Most breeders will tell you a buck makes a better pet. They say bucks have more of a puppy-like personality and does have more of a cat-like personality. However, my little house bunny (pet only), Elsie, is just like a little puppy! She follows me around, circles my feet until I sit down and pet her, and is constantly underfoot begging to love and attention. She used to nip my legs when I wouldn't pet her. I've taught her not to do that, so now she licks me. Just like a puppy!
Cinnamon and Gracie love to sprawl out on laps, more like cats, but they strike me as being more puppy-like also, rather then more cat-like. Eh. Maybe that's just because my family doesn't like cats.
Sir Lancelot has only been here a short while, but he behaves a lot like my girls. He runs laps in his cage begging for attention while I'm feeding the other bunnies, and squishes his nose up to the cage door when I come near. My does do this too.
In my last litter, the little bucks were always the first ones to the cage. The does were shy and hung in back. I thought it would be the same with this litter; nope! Quite the opposite! The girls are the first to the cage door. The bucks come too, but Sweetpea is the first one there!
Not only will most breeders tell you that a buck makes a better pet, bucks and does do go through different types of sexual maturity. Does usually become antisocial, finicky and mean. My own little Cinnamon is the sweetest rabbit I've ever known and she wants to be bred so badly right now, she behaves in a way that is not normal to her ever since she turned 6 months old. She runs from my hand and kicks, kicks, kicks when I try to pick her up. Her sister, Caramel Latte, whom my friends own, are having the same problem.
Gracie never went through that. Of course I bred her as soon as she hit 6 months so maybe that's the reason why. But I'm sure that if you spay your rabbit as soon as she hits 6 months she'll stay your friend forever.
Bucks don't go through the same thing. The love breeding, of course, but they mark their territory a lot more then does do and often don't go through a personality change. The buck should still be neutered once he reaches maturity because 50% of all bucks will spray urine to mark their territory.
No matter the gender you get, both can make amazing pets. And if you get one of each (be sure to neuter/spay so you don't wind up with more and more babies!), you can experience firsthand what changes a buck/doe go through.