Oh boy, that`s hard to say. They`re different, at least looks-wise (I vastly prefer OCW on paint/D156 on trim, but that`s just me). Funny how I like the OCW better, even on silver...would`ve expected it to go the opposite way on that car.
I have zero idea whether the D156 is fresh-paint safe. I didn`t believe it about the OCW until Ford said it was OK (color me paranoid).
And yeah, I use the OCW on things like lenses where UV concerns me. Don`t know if it`s better than other stuff in that regard, but eh...I already have it so it`s an easy decision for me. Whether *you* oughta buy some, well...there I go spending your money again.
