I remember begging my parents to let me have a rabbit. The idea of a little fluff ball running around my house thrilled me. After months of power points and persuasions they caved. I went to the pet store, and picked up a young (probably 2-3 month) old rabbit. I named him Noir (he was all black) and put his cage in my room. He was an interesting rabbit... he liked me but no one else. Then things got bad.. he would rattle the bars of his cage all night long and refused to be house trained. He seemed in constant distress, and i had no clue why. He got daily love and was spoiled constantly. I had no idea what had happened. He went from kind to evil. In a last ditch attempt i got him neutered. No change at all. My father suggested we move him outside; i agreed because i was losing sleep from his cage rattling. Being the nervous mom that i am i equipped a large outdoor rabbit hutch with a cage heater and water heater. We placed the cage by our hot tub so that he would be near activity. The difference was seen immediately; he went from angry and destructive to playful and kind... all from moving inside to out.
Then he became lonely, so we introduced two more rabbits(we thought two females to go with our neutered male). They went through a month of fighting ( establishing social status) and then all was good. Serenity at last. That is until i opened the cage door and found baby bunnies. Tip: make sure that you actually do have two females and not one un-neutered male and female.
So, i say outside is better (less smell, and the novelty of indoor living wears off quickly). Not all indoor rabbits are suited to life indoors.
I also say get a pair or trio, but make sure that you know their correct gender.
Also, make sure you give them plenty of loving if you have them outside, because they can quickly become unhappy with contact (not a problem that we have). I do love my outdoor bunnies!
Now we have two males, as the doe died of unknown causes.