Depends on what you want out of the head unit.. Boils down to decent SQ and bluetooth, or excellent SQ without bluetooth unless the box is added.
The 980BT is a nice one-box solution for bluetooth and some decent conventional head unit features.. The 9887 is strictly an SQ style unit, that can have a bluetooth box added if that's important, but the 9887 will allow far more sound tuning and active capability between tweets and mids in 3-way mode.
Now, I've also come to realize that with a couple amps out there, you can go active with two channels of any head unit with conventional HP filters such as the 980... The JL 300/4 and the Sundown 100.4 will do that... So... What's it mean? It means you can go completely active (no passive x-overs) with a simple 2-way frontstage, no rears, and sub with either deck.
However, from a pure sound quality standpoint, I'm betting based on reviews, the 9887 is THE deal among these two.. It competes directly with the DEH-P880PRS, the CD7100, the DXZ775USB. It has the active capability of the P9 combo and the DRZ9255, though it's a given those two high-end units are a far cry from either of the others listed here.
I'll be going 9887 most likely.