Gellis1,
If I remember correctly the Marigo bands are about $70 per driver pair. If the basket arms are of smallish circumference you can treat 2 driver pairs. These can add significant "involvement" for a relatively modest investment.
There are loads of DIY projects at Tweaker's Asylum that you can try that involve component isolation and other beneficial tweaks. I sense that your dissatisfaction could be cured with attention to some of the details I have mentioned. I have personally installed the Marigo bands on two pair of loudspeakers and greatly appreciated the results both times. I doubt very much that this treatment alone with get you where you want to be, but I am pretty confident it will make a difference that you will appreciate.
If you get over to the Tweaker's Asylum, check out bdiament posts regarding decoupling components and loudspeakers with roller bearings. I think he is right on the money with his assessments. An Audio Asylum member (transmissionfluid) is currently trying to organize a group purchase of Barry Diament's DIY Hip Roller bearings. These are 7075 grade aluminum discs milled to certain specs provided by Barry. If I were you I would take advantage of the offer. I don't know how close he is to getting this going, but I hope that it happens soon.
As Psychicanimal and others have mentioned, power treatment is another area that can help lead you to bliss. The only power treatment I am using personally is ACME silver plated/cryo treated outlets and this has lowered my systems noise floor significantly. I am currently researching how to more fully exploit power delivery options.
I also agree with Psychicanimal, sonic bliss involves a lot more than money alone can buy. That said money well spent on accessories can go a long way towards contentment too. With your budget you can afford to go slow. ;-) And even with a large budget, patience is the wise path to take.
If you are willing to make the investment someday, Machina Dynamica isolation platforms will most assuredly have a huge impact on improving the enjoyment of your current system.
I have never heard your digital equipment. If you make a specific request with North Star DAC/Transport in the title you presumably will find people who have. It is a good idea to poll these people as to what isolation, power, and cabling solutions have worked for them.
