I'm not a skier so I can't really start to recomend certain types of ski's but as for a good place to get used ski's at a good price check out:
www.skisale.ca
It's a giant used ski/snowboard sale that runs every year and happens to be this weekend.
As far as new, there is no reason to EVER buy new ski's at full price unless you just have to have this years graphics for the entire season. Every spring all ski shops blow their stuff out at awesome prices.