Replying to 189 vs 179 hellbent

i heard they measure longer (4-5cms) than their stated, length...but the rocker is pretty insane, so they ski shorter.

i'm 5' 11", 170.  like to charge, etc, but this is going to be just a jibby/booter/butter ski.  i don't want the 189s to be too unwieldy.

woudl really like some input from people that have rode them.