Originally Posted by silentbob

I'm not sure if I believe its as cut and dry as one particular rep range is best for building size.

There are bodybuilders with tremendous physiques who've always trained with high reps. Just as there are great physiques that have come from doing many sets and also few sets (volume vs HIT).

Personally I think a variety works best. I believe in doing high rep and low rep workouts either in rotation or in training mesocycles. I think a variety of rep ranges is the only way to maximise gains in both fast and slow twitch fibres.

For strength, however, from experience I believe 5x5 works best.