Breeds make no difference. Rabbits usually do like the company of another rabbit, but you do have to go through a bonding process because they can be very territorial and visciously fight. Rabbits have a heirarchy system like many group type animals (dogs, etc)
There is usually always an alpha, and if two alpha rabbits are stubborn about being the top dog they can do harm to each other. Many times it is more challenging to have same sexed bunnies, as usually an alpha female and an alpah male will accept the other easier, but two alphas of the same sex may want to fight to be the top bun. Also, spaying and neutering first helps because the hormones that drive them to fight over territory are lessened.
If you are going to get a second bunny, I highly recommend going to a rabbit rescue or shelter and go through a "bunny dating" where your bunny can pick out the best match. It will make your life a heck of alot easier. Rabbits that don’t bond easily can take up a lot of time, space and may mark up the place to establish territory boundries. Usually at shelters and rabbit rescues, they have also already spayed and neutered so that’s one less thing you have to deal with.
Plus you save two lives. The life of the bunny you adopted, and the life of the bunny that will take it’s place at the shelter.
Check out the bonding section of this site for more tips.