This dilemma seems like an Average Joe college frat boy focusing on bench, arm circumference while reading a bunch of articles online but finding no answers. Not to bash you but everyone has their own opinions and they all want to shove em up your ass. Therefore my best advice in order to get BIG is lift the core lifts (back squat, ft. squat, deadlift, bench, press) on a consistent week to week basis and pick 2-3 accessories on your workout days and train them intelligently. Getting bigger arms the right way I believe is overall body fitness as well. Gain overall mass, instead of just arm mass...try a lift program like this which will get you where you need in a basic powerlifting mass packing sense:
M: Deadlift 5x5, Accessories: Hypers/Reverse Hypers, Clean Shrugs, Abs all at 3x8-10
T: Bench Press 5x5, DB Incline 3x8, Tricep/Bicep DB work, DB Side Raises
R: Squat 5x5, BB Rows 3x8, RDLs 3x8, Abs
F: Incline Press 5x5, DB Flat Bench 3x8, DB Upper Body Circuit
Sat, Sun: Off
For mass packing food simply follow a high-carb diet with 1g of protein per pound of bodyweight you have. Carbs give you the energy as an athlete to attack the lifts, allows the body to use carbs for energy opposed to protein or fats, and allows for a greater caloric diet obviously...and I'm talking about pastas, rices, oatmeals, fruits, veges..quality carbs.
Find yourself a log book and write this:
Fill in each meal and focus on a protein, carb and some kind of healthy fat (peanut butter, olive oil, nuts, seeds, butter sometimes too).
Eat, lift, sleep...check back in 4-5 months...if done right you should be fucking big and strong (BTW reps/sets etc. change every 3-5 weeks depending on hypertrophy, strength, power cycle)
Really ain't that hard...there are no tricks, just big lifts, big amounts of good food