I really like the first game's OST, but PW2 and 3 haven't been anything special to me. How does PW4 shape up?
I'm a bit surprised at your indifference to PW3. It's far more of a spiritual successor to the first score than PW2 was, at least. It's also the most thematically-pleasing of the three games, in my opinion, and does serve as a nice bookend for the trilogy. I can't wait to hear the remade DS score.
I am enjoying Gyakuten Saiban 4; not quite as much as PW1 or PW3, but it's worlds better than PW2, and Horiyama's style is punctuated nicely throughout. In case you missed this thread, you can try a few samples from the partial game rip here: