Go for the car that have spare parts available.
Inferno US Sport have a lot of steel and HoBao Hyper are some where near Pro Kit...
in term of technology invention I think HoBoa have slightly advantage becoz Hyper 8 is a new design and Inferno US Sport are difference with their current MP777 SP2...
Hyper score - 8
Inferno US Sport score - 5
Make you choice wisely......