Heard so much about these I finally bought one. Got a Burley Koosah and just did 28 miles. Can't believe how good I feel and how fast that thing is. Usually I have a really stiff back and neck after riding my DF and it was as fast as my road bike! Wow what a nice ride. I'm 63 years old so need all the comfort I can get and am looking forward to lots of miles. I now see what you guys have been talking about.