Rossignol or Volkl?

Hi, I want to buy my very first skis, and I've been offered (at the same price) a Rossignol Zenith Z5 wpi, Volkl RTM 75 is and a Volkl RTM 75.
I'm an intermediate-advance skier. I tried the Rossignol Zenith Z2 which I loved, but they cost twice as much, so I can't afford to buy them.
I hope to get some good advice, so I can finally decide. Thanx!