Replying to What Park Skis to get?

Ok guys so i'm currently rocking a pair of Salomon Czars 166cm (2011) their in near mint as i look after them bar a few surface chips and scratches.

But im looking to progress my riding in the park and would like some advice on a more park specific ski, I hit rails and boxes as much as kickers.

Im about 5 10'' and around 150 pounds.

I feel super comfortable on my 166's but if you think i should go up or down let me know.