generally the slimmer grips give the most control, you can get a more solid grip on the bars, i really like my odi ruffians, basically what gives a grip more control is your ability to hold it, so all thing grips will be about the same, texture can matter too, i've always found big grips to be too squishy and harder to really get a solid girp on (not that i grip the bars tight, not that kinda of good grip) and i ahve avg to large hands. The ergon are comphy cause the flat top means you don't really have a pressure point on your hands, with round grips they kinda cut in and push in a small area supposedly reducing blood flow, however, the ergons arn'e the best for control cause you can't really push on them with the heal of your hand (it would slip of) so rockin down that rocky section... but alot of people still really like them, if you feel comfortable using them for your riding style then they are fine.