You also have the chance to exchange items with one another. Very little communication is required, and while the monsters are tougher, collectively you'll breeze through the content much faster, and so get more loot.
Even if you're not typically a fan of multiplayer gaming you should always try to play in a party. You'll find this approach beneficial, even when you're just setting out to get geared up. The faster you can zip around each Bounty, the faster you'll reach your target, smack it over the head, and then get on with the next task on your list. You should always prioritise Movement Speed in the Core section of each character's Paragon pool.
