BenjEEI am 5'8 150ish and Intermediate- advanced skier. I would use them mainly for park (I have only just finished my first year). I have been riding with a din of 8. Should I break my bank account and buy some the pivot 14's or are they overkill? Would the look pivot 10's be a better option even though I am looking to holding onto these skis for a while?
If you know you're never going to ski above 8, the 10s would be alright, but if you think you might go higher eventually (even if only 9) then I would definitely get the 14s. If you ski with a binding at or near the top of its DIN range, it won't be as accurate. It's best to get a binding with your setting around the middle.
That said, there might also be other differences between the two. Sometimes a higher DIN version of the same binding will also have a stronger construction (ie more metal) so look into if there are any differences besides the DIN range.