i was zipping around in my dad´s temporary Festiva GL (no power steering, and temporary cuz it´s sold now
, and while driving at speed there wasn´t to much difference in the steering feel. however, i never tried doin any sharp corners or slaloming or anything like that. also, when turning from no speed, like doing a U turn, it´s harder to pull around because you´re the one twisting the wheels around on the spot, not some powered motor.
also consider that racers in the FIA WRC all have power steering, and when it broke, their times got reduced because of the extra effort needed to pull those muthas around the course