Ozonys has better brakes,very expensive and light tires,hubs,better stem and bars...only worse part are rims and I´m not sure about that either,just because they aren´t drilled doesn´t mean they aren´t actually lighter than TR´s.One thing that is deffo better is frame on the echo,but if he doesn´t have money to upgrade mentioned parts,ozonys is probably smarter choice as it doesn´t seem to ask for another investment anytime soon.