You can get decent bike computers that give the basic info for $15. http://www.nashbar.com/bikes//Produc...2_217197_-1___ Racks with dog-legged rear stays are worth having, but normally I only use a trunk bag on top (I think it looks more sporty). Get a waterbottle cage and bottle. Get bar-ends on the handlebars. When the tires start showing signs of wear, replace then with slick tires 1.5" wide - this will make the bike roll more easily.