I use a 1999 trek 6000 for my short (15 min) daily commute. However, it has straight flat handlebars, and sometimes I feel like I'm bending over a bit too much. On longer rides, my hands also get tired of staying in the same position. I'm considering either a riser bar, bar ends, or both (?) to address these problems. Can you guys comment on those as solutions? Which would be better, and where would be a cheap place to get these parts? Need new handgrips too! This is just a durable commuter that gets locked, so I don't need anything fancy but it should be durable.