well i had the choice of both when i was looking for my current car. Although the 106 had better performance and i could afford either, i decided on the clio as i preferred the better interior, air con, fully adjustable seats, newer car, not cramped, slightly lower insurance, more car for ya money etc. etc.
although the 1.6 clio woulda neva keep up with a 106, its still a great choice and i dont regret choosing it over the 106.
HTH