Sandy's Vivente has low handlebars, this combined with the not so efficient brakes made us think about converting her bike to flat bars and putting a set of v-brakes on the front.
Wow!!! What a difference. The bars are higher so she's more comfortable and the brakes are fantastic. We trialed it with the gear of my mountain bike but then bought her shiny new LX shifter and brakes levers and a set of v-brakes for the front. Fitted it all and she loves it.
Will post photos later.