I purchased some speakerwire and interconnects from http://www.BlueJeansCable.com to go with my 990.

The speaker cable is pretty heavy duty stuff. 10 gauge twisted pair (although they sell 12 gauge twisted pair as well, or Canares quad if you want to go more expensive) and pretty inexpensive at $.61 per foot untermintated. Plus their banana plugs are of good quality and also inexpensive at $3.50 per pair and come with colored heatshrink tubing so you can make them look all nice and pretty.

Anyhow, will have to let you know how they sound, but they should do pretty good. And their RCA interconnects are pretty good too. They use Canares RCA connectors which are uber solid and connect really nicely and not too tight, pretty much professional grade stuff.

They have different cable types to choose from and each cable is custom made to your desired length.

Not as cheap as Acoustic Research stuff you can get at Best Buy, but not as expensive as most of the Monster stuff either and they have better connectors.

If you are more into higher end stuff/more expensive stuff, Outlaw sells cables and I've heard that bettercables.com sells good stuff.