Usually you put this thread in Gear Talk but since your new 177 is roughly 5.8 ft and depends on each ski brand (varies from different ski brands). So if you 6 ft then 177 would be around forehead and if your 5.8 its going to be just as tall as you, give or take a few inches. Depending on how you ride, agressive, rails, jumps, ect each length is personal preference. Tip: Don't get afterbangs just cause everyone has them, it might not fit how you ride, but don't let me dissuade you.