Hands down a Robi is the better unit.
130 watts stock motor rips on the track and usually reads about 61-62 watts on a fantom.
I have tested guys 67-69 watters from a Fantom on my Robi and they were duds on the Robi like 118-119 and duds on the track.
I sold my robi for some quick cash..........wish i had it back.