WISH LIST:

Wish #1 - I Want Money! = 500,000 Zeni

Wish #2 - I Want A Rare Item! = Goodie Radish (Accessory; worn on back)

Wish #3 - I Want To Dress Up = Crystal Battle Suit (1st Time), Gold Battle Suit (2nd Time)

Wish #4 - I Want To Get Stronger = 6 Soul Echo Devices + 3 Soul Diffusion Mix Dev.'s

Wish #5 - I Want To Grow = Increases Level By 1

Wish #6 - I Want A New Ultimate Attack! = Time Skip/Molotov (1st Time), Ice Cannon + Burning Spin (2nd time)

Wish #7 - I Want A New Super Attack! = Flash Fish Crush (1st Time), Ice Claw + Ice Field + Burst Attack + Burst Reflection (2nd time)

Wish #8 - I Want More Usable Characters! = Unlock Hit (1st Time), Eis Shenron (2nd Time), Nuova Shenron (3rd Time), Omega Shenron (4th time)

Wish #9 - I Want A Second Chance At Life! = Resets Attributes (so that you can redistrubute them)

Wish #10 - I Want To Be Drop Dead Gorgeous! = Allows you to edit your characters appearance (Gender/Race/Name cannot change)

Wish #11 - I Want Medals! = 10 Medals 200 Medals (allegedly changed)

Wish #12 - I Want To Dress Up More! = Turtle Hermit Set (accessory)

Wish #13 - I Want Another New Ultimate Attack! = Minus Energy Power Ball

Wish #14 - I Want Another New Super Attack! = Dragon Flash Bullet + Whirlwind Blade

Wish #15 - I Want A Full Stomach! = 30 Pudding

Wish #16 - I want to become a super saiyan god = Unlocks ability to learn SSG from Beerus (5 max friendships with instructors required)

Wish #? - I Want to Grow More! = increases level by 3 (can only be used at level caps 79, 84, 87, 90, 93 and 96?)

OBTAINING DRAGON BALLS:

Most players tend to farm Parallel Quests #4 (Prepare For The Attack Of The Saiyans!) OR #24 (Super Saiyan Legend); the goal is to challenge the 3 patrollers to a fight when they arrive. Each patroller has a chance of dropping a dragon ball upon defeat, so it is possible to get multiple Dragon Balls in one run (though unlikely).

As many commentors have pointed out, PQ23 (The Explosion of Namek) is also a viable option. This is actually the one I personally use to run as well. After quickly defeating Freiza, you have a chance of three patrollers spawing directly afterwards.