The Cooper's heavy and sluggish to ride, over priced for what it is. Can't beat the KHS Flite 100 for £500; the frame's amazing for the price and you can always change some of the poor components later (supplied pedals are truly terrible, BB doesn't seem the sturdiest)
if i was buying a new bike, it'll be the KHS Flite 100.. that frame is sweet
if i was buying a new bike, it'll be the KHS Flite 100.. that frame is sweet