I'm a high rep guy. I gained more size and weight using a 10-12 rep range then I did using a smaller 4-6 rep range.
If you still use the highest weight you can handle, and each set last the optimal range of 35-50 seconds. Then you are sure to grow over only having each set last 10-20 seconds.
I love changing it up, so one week you could do standing BB curls first, then do alternating DB curls. Then the week after that do the DB curls first and BB curls second. This way you always keep your muscles guessing.
Bookmarks