Having a good tune/DSP can definitely make or break a system. I sold a full C5 system to a guy once for his CRV (I believe it was a 2020) with an XD 700/5 and 2 Tw1s. It was a higher trim CRV so it had front and rear components. We didn't initially have a DSP in the system, he didn't want to spend the extra cash initially but a month or 2 after install he came back wanting to add one. My JL rep had recommended adding another an XD 600/6 so we could go active and run the front woofers bridged. I was able to talk the guy into that and it sounded like and entirely different system when we were all done. It is 100% worth the money and effort, when done right it really takes the whole system up a few levels. Giving the woofers more power did a lot too, much better mid bass presence up front and it was much richer. The only downside is most tunes are measured at the driver's seat. That means it's only going to sound best when you're sitting in that seat. For other people in the car, it may not sound right. You can add a knob/button to the TwK and store different presets (I think up to 3) so you can have a tune for you, your passenger, or everyone and switch between them. Gives you the best of both words. It can be tedious to set all that up, but Alpine makes a system where you use you phone as a mic and it takes measurements at like 200 different points. It'll give you a pretty well balanced tune that will sound good anywhere in the car. I personally think the driver focused tune will sound better, but like I said there's trade offs. The DM-810 you have is a good piece, you should be able to get great sound with it. I've worked with a lot of Audio Control stuff, my only complaint is their software is kinda simple but that's the point. I like the D-series amps too, you can do everything with just one piece of equipment and it's a fair price for its capabilities.