Replying to Keep my pe's or get silencer's?

last year i got a pair of 164 pe's. i had intended to start in the park, but realized i'm a wuss. i was just looking at this years skis for the first time this year and saw the silencers. i was planning on keeping the pe's but i'm wondering if i've outgrown them. i'm 5'10" and about 120lb. i haven't quite given up in the park yet, but i'm thinking i'll be skiing the mountin 80-90% of the time.

so...
should i keep the public enemys, get the silencers, or something else that's not a twin tip