Aside from aeration wands or the like, all aeration methods will yield EXACTLY the same level of O2 in your wort, if done long enough. Two mins of vigorously shaking the carboy = 5 - 10 mins with a pump and aeration stone = 1 - 2 mins of vigorous stirring with a mixer on a drill, etc. etc., etc. The limit for all these methods is about 8 ppm of O2, which is the atmospheric concentration of O2 in the air.
So just pick the one that you would most rather do.
Or get an oxygenation system and pump in as much O2 as you like in seconds (that's my preferred method).