Subject says it all. I need a single speaker to finish out my 8.1 system connected to my Yamaha RX-V3000 receiver. I have a CS400 center, RT55 mains, RT35i side surrounds and as of today a pair of RT15i speakers for the Yamaha front effects channels. My receiver will support a center rear, and I have figured out that I have space for one, but not two speakers in back. Problem is... I can't find anybody who will sell me just one speaker. Circuity City won't, anyway, and the Crutchfield site only lists them in pairs. A center channel speaker won't work for me. I need an RT25i or and RT35i. I'm anxious to find one since these models are discontinued, and I want that trilam tweeter to match my setup! The new models that are replacing these have silk tweeters. Any suggestions? Thanks!