Narrow and with a classic camber (i.e. with a curve towards the inside, starting from the contact points between the heel and the front tip), piste skis provide good grip on the snow. You can negotiate your turns in style with them.
Does skiing mean a search for adventure to you? Freeride skis, with a flat camber and front and back rockers (that raise the tip and the heel), are ideal for tackling powder snow.
With ski hire, you can switch style as you please, changing skis as the fancy takes you. If you buy, you get to own your own pair, but you need to use them regularly, more than once a year to get your money's worth.