Texan, I saw your red Streamer on the Warwick forum. My user name there is Rehan.
I have the Aguilar OBP-1 in all three of my Streamers and love it. The Aguilar kicks ass over the stock MEC pre's in Warwicks. I would make the move. You won't be disappointed!
By the way, I have volume/blend controls in the OBPs that are in my Streamers and recently switched one of them to volume/volume. Doing this caused the bass to have a stronger and fuller low end and the overall volume increased.

The tone sounds even better now! I am going to switch all my basses to volume/volume on the controls.
Hope this info was helpful!
Cheers!