Chrome, the fastest, easiest, goofiest browser out.
Firefox the most reputated, safest and loved out.
IE the most fail browser out.
I used firefox from 2006 till early 2010, installed chrome and never went back to firefox.
I have all 3 lined out now on my windows 7 on the task bar (quick launch) and i clicked IE, Firefox, Chrome. Chrome loaded up 1st even though it was clicked last, the other two took over 5 seconds to load. The choice is yours however i recommend chrome for simplicity and speed.
Firefox is known to be the safest but i think the others are just as safe if you know what your doing.