SDRTrunk has some of the best sounding P25 audio I've heard, coming as close to an APX as I've heard with my own ears. It's definitely the best sounding of the decoding software, as DSD+ sounds noticeably inferior in comparison. From what I've heard of OP25 on BCFY Calls and OpenMHz, it seems like SDRTrunk has the advantage there as well. Denny is the man.