As far as the weight "will I feel em" issue, the short answer is no. Your legs are pretty powerful bits of muscle, and for practical reasons, a bit heavier crank wont make you feel any different than riding, and if it does you will get used to it in a few days, depending upon how regularly you ride. The difference in weight between those cranks and the sugino's is minimal as was mentioned before, and those suginos are mad popular. If you like the look and they work into your budget I wouldnt worry about em unless you are shooting for the lightest bike possible.