Everyone reacts differently to stimulus. But general wisdom will credit mass gains from reps in the 5 to 10 range. Most strength gains are from the lower rep sets (1 to 3).
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Train the body as it truly is: one, flexible piece!
The 5x5 routine when applied correctly is a TON of volume and most people don't respond to volume, they stall out quick and get overtrained, especially if you are a hard gainer.
Some do well on it though.
The other choices there you could try and see what happens. Try one rep scheme for 8-12 weeks, then try another.
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"Strength Gains are the Key to Muscle Growth".
"You will miss some and you will make some but what happens with these sets WILL determine your future strength."