Hi, installed the Dually ISO foot pegs with ISO stirrups about three weeks, and got totally used to them after 2 or 3 rides, they feel wonderful under my feet, for anything from commuting to work, to riding hard through sweepers. I got the pegs, adapters, and stirrups from Ma's cycles for about $140 total. I think the size of the pegs is purely personal preference, they all mount to the adapters.