Replying to Amplid Skis

I made a thread like this in the amplid cult, but I think I might get some more answers here.  Just for the record, I did searchbar a lot and I found a lot of info, but not enough.

First of all, I'm 16 (17 in April) am 5'8 and 140 lbs.  I'm gonna grow a little, but not very fast or much.  I'm looking at a few different skis for solely park use:  Line Anthems, Amplid Antidogmas, and Amplid Townships.

I've heard a lot of good things about the Line Anthems and am very close to buying them, but I want more opinions.  I'm fairly new to park (not skiing)  but am progressing fast, and want to get a lot better at park and urban (not pipe).  I'm looking for a ski that would be a great urban ski because I live in NYC and want to get better at it, and also a great park ski, because I mainly ski in VT and want to seriously improve my park skiing.

I want to know a few things: how flexy are the amplid antidogmas and townships?  Should I go for the 172 or 178 in the antidogma?  171 or 178 in the Line Anthems?  If I get the Township I'm def getting the 176.

What ski do you think would be the best for me?  Throw as much as you know about these skis, especially the amplids.

Thanks in advance.