Having had my Coguar for 3 years and completed 23000 miles commuting to London each day (32 miles total), I offer the following as a warning. Make sure you keep your chain and sprockets well oiled and adjusted. Due to the extreme length of the chain drop they easily wear. I have replaced mine once at 13000 and may have to do it agian soon. Not a cheap job, £90 - 100 for the bits.