I like all the brands up there but because i've just started collecting so i wouldn't know what would give me the best chance of getting me a gu or an auto.
Correct...Topps appear to be more generous with what they put in the boxes.
I should add that the Co-signers box has a guaranteed GU (as does the 08/09 Bowman box that I forgot to list)
At the end of the day it should come down to which set you like the look of the best...you shouldn't be worrying about "hits". More often than not the hits turn out to be misses anyway!!