Sounds to me like you chose a nice system at your price point. If you are happy with the source material, I'd think about a good musical subwoofer. Your Paradigms start rolling off fairly steeply at 80hz. A sub would make your system full range and, if properly paired with the mains, put big smiles on your face for a long time. As an example, a Paradigm SE sub should mix well with your system, is a very nice sub, and lists for less than half your budget. I may be all wet here - just some food for thought. Good luck!

i have almost same set up macbook pro digi out camb dac camb azur 640 paradigm 20s and a MK subwoofer.go with a small sub and a turntable with cambridge phono preamp.dont use i tunes to play your music unless your just randomizing,use play it will give you a big improvement to your sound.and be sure to adjust your midi settings to 96 khz 24 bit.enjoy!

The Paradigm Studio 10 v.5 has pretty solid bass extension almost down to 40Hz in most rooms, but will still benefit from a good musical sub crossed over at 60Hz. You could try the Emotiva Ultra Sub 12 for 30 days and if it doesn't do it for you return it for your money back.