Need more info.
Are you trying to pass your level III exam? What do you ski well? What do you ski poorly?
I just switched from repping for Fischer and went to Nordica. Due to your weight I would have to look hard at a junior ski. How good are you in bumps?
In the Fischer line I would steer you towards an RX6 in a 155.
In the Nordica line the Speedmachine 12 in a 154.
Either would be a great exam ski.
I would have to give the edge to the Nordica due to their new XBS binding system. Everyone who has used it speaks very highly and in the past I have not been a big fan of the new "systems". This changed my mind.
I rep the ski as I said and sell to pros. I can also sell to the public through a few dealers who want to move skis. I can ship you a Nordica at a wonderful price. You'll like it, however, if you don't you'll be able to sell it to a customer quickly and might make a profit.
I think a 120 lbs you won't be able to flex the 5 *. I know nothing about the other ski.