I find Nordost turns at Valhalla. I have not been impressed with the tiers below. But Valhalla are great and get better at tiers above. Getting them cooked is a good idea. You are likely to be really happy.
You have some great components. Looking at your system there are some big opportunities for improvement through setup. Assuming the photo is still current. You can get huge improvements in sound quality through setup and acoustic treatment. A friend of mine whom I helped pick out his system has completed a year of experimenting and adding room treatments and I have to say it sounds at least two or three times better.