First things first, you posted this question in the DIY forum, so you do need DSP. The next issue is what you use for your DSP. Either behringer or minidsp will work very well. Behringer is a surprisingly useable and powerful DSP to be included in an amp, and wants for very little. Minidsp does, however, have some specific advantages that may or may not be important to you:
1. The ability to EQ below 20 hz
2. The ability to mute/unmute a sub without unplugging it from the amp
3. With the wi-dg, Wi-Fi connectivity vs a cable for each amp
4. Even without Wi-Fi, behringer would require a cable, or switching cables, for each amp, minidsp can control four channels with one cable
5. Multiple configurations
6. BEQ! (this alone is worth the price of admission)
I use both. I originally used the nx6000d dsp and then got a minidsp for the sole purpose of BEQ. I quickly discovered the above advantages. I still do use the behringer dsp for a few things even with a minidsp. I use the behringer for the voltage limiter function. I also find the additional timing channels to come in handy.
So, if your question is whether to get a dsp version of an inuke or not and you have no other way to apply dsp, get the dsp version!! If your question is minidsp vs inuke dsp, read above and decide if the differences are with it for you ... then still get the dsp version, it adds functionality and increases resale value for a nominal price increase
SPEAKERS: 3 x DIYSG 1099's LCR; DIYSG HTM 6's and 8's surround; 4 x RSL C34E's atmos.
SUBS: 4 x UM18-22 Mini Marty's and 2 x 21DS114-4 Devastators
SIGNAL CHAIN: Denon X4400; Minidsp 2x4 HD; 2 x Jensen Iso Sub 2RX; 3 x NX6000d.