need comments on my system

This is a difficult question to answer without knowing you, and your tastes.

What is it about your system that is not satisfying? Are you looking to improve a certain aspect of the sound or system?

Opinions are as worthless as the cyberspace on which they are printed! But here goes; I have owned Counterpoint gear and was really not very impressed or satisfied. I went to SS and liked the sound much more, but that doesn't mean you would have the same results.

I still maintain that after the room, the source is the most important link in the chain. If you are truly unhappy, start there and replace your transport and DAC. That's just one option. I don't know that any of the Counterpoint (don't get me wrong, I'm not trying to insult your gear) would be considered state-of-the-art. There are lots of things that can be done, but again, what do you want to expereince as an end result?

Try a Tact RCS 2.0 Room Correction/pre amp.

I've just installed one in my system and it is starting to prove itself as a very worthwhile upgrade. There is a learning curve to go through, and you will need access to a PC with a spare serial port.
There is nothing too technical to learn, you just basically go through a period of trial and error until you end up with the right tonal balance for your ears.
I'm amazed that more people are not using this piece of equipment and raving about it.
Let me know if you need more info.

DD15 is quite good. I placed it on the left front corner next to the Left-CLS in 45 degree angle. This overall covers my listening area. I had the HGS-12" Velo before for its tighter bass. But, this DD15's bass performance is not any less-tighter than the 12. Actually it works better for my taste. It's deeper and bigger bass and still tight and fast. The built-in 1200watt amp can fill the room with no sweat.

Its effect is almost as good as having main tower speakers with dual 12" front-firing woofers per side.

I programmed the crossover EQ in a decreasing curve around 70 Hz. List at $3,000 - I may get another one to place them on both side, and I would need a bigger room about 20x30'.