I'm always suprised at someone saying that the DB750 is somehow lacking in midrange. Maybe its just me, but I've never said to myself 'man I wish I had more midrange' when using the DB750. IME the tone of the DB750 set flat and with the gain at 2:00 and master between 7-12:00 depending on the room, I always get a thick yet clear sound that sits perfectly in the mix, no matter if I'm using a Pbass/URB/MTD/Sadowsky/etc. Now, while I generally go for a more old-school fingerstyle tone, I've also had other bassists use my current rig who have more modern tones and it sounds equally as great.
IME at least.