I have a few D-Box systems and I'll say that it is probably the best and most exciting home theater purchase I've ever made.
Keep in mind that those chairs shown on the D-Box web site are their OEM chair built by Jaymar. The other chair manufacturers listed under the "SRR Models" link have a wide variety of styles, colors and budgets. I also saw at the boat show in Miami, FL a couple of weeks ago that they've signed on a new chair partner called Design NS.
I'm new to the forum and I can't post links yet, but if you are looking for a custom design for your dedicated home theater (or maybe something that blends into your living room decor much more easily), definitely look up Design NS, Inc. on the internet. They have a custom-build factory in Boca Raton, if you live anywhere near there in Florida, they have a 15,000 square-foot showroom and would be more than happy to give you a D-Box demo. They will build D-Box acutators into almost any design you can choose out of their catalog.
If you have any more questions, feel free to ask!
-Levi