for your height 189 should work, the fact that ur previous skis were only 176 is crazy, im going to be getting the 179 one lifes for park, i dont have them yet so i cant say how much i like them, but i can say i love riding a powder ski in the park, usually all the weight is under foot because the tips have been lightened for better float, so although you cant do 4 swaps, u can usually still spin onto and off of rails, and i have found the larger platform under foot makes landing on rails considerably easier and when you land off balance there is still enough ski under foot for you to recover easily. Riding a wide rockered ski in the park made me fall in love with skiing all over again, and i wont go back to riding anything else!