i'm not a messenger, but i ride 7 days a week independently (meaning i'm not obligated to ride to work or school), in rain or shine, on top of being a commuter biker (i have no car!!), which is about 10 miles each way, 5 days a week... so it just works out that i ride a lot. i just love it, once i get on a bike, i always just hate getting off!
thanks for the advice though, it's a shame that i have absolutely no way of trying them out for a while before getting them..