I'm getting a Specialized Sequoia Elite and am thinking of putting a Brooks saddle on it. I will be using the bike for recreational riding (I ride about 40 - 50 miles a week) and 50k,100k and (my goal) 100mile rides. I'm curious about the width of the saddle. I can get one that is about 6 3/4in wide or 6in wide. Any suggestions? I'm not going to be racing so is wide better or is narrow better? I'm 6ft and about 165lbs. so I don't have a big arse.