Two routers on different bands

I want to have a 5 GHz band for HD TV signals, and a 2.4 GHz band for data. I have looked into some dual band routers, but according to the reviews, I'm not sure that they will do what I want them to do. Also, the dual band routers are more expensive than single band. If I DID get a dual band router, it would have to be true dual band, or simulatneous.

Give the drawbacks of dual band, I was thinking about getting a single band 5GHz router, and employing two routers. I think this would essentially accomplish the same thing as a single dual-band router.

1. Is there such a thing as a single-band 5GHz N router? If so, any suggestions on which one to get?

2. If the answer to the first question is yes, has anyone tried this configuration?

Thanks in advance.