hi guys ive had to post back on here has i cannot post anywere else,ive asked about bikes and been told to get a Saracen Mad stock,whats the stock mean please and are there any othere bikes like this,im 6ft tall and i donot want to ride the small bikes with no seat,any of you guys my height?i also need this bike to get to work on 10mins away?so if poss i wonna ultra light bike that im not going to look daft on ???