Yes, I think I'm going to go with Logitech. They make a good product for the money and their backup tech support should be a role model for all other companies.

I've narrowed it down to these:

LOGITECH MODELS

Z625 Speaker System with Subwoofer and Optical Input Powerful THX Sound $ 169.99
Z623 Speaker System with Subwoofer Captivating THX Sound $ 149.99
Z506 5.1 Surround Sound Speaker System Surround Sound Speakers $ 99.99

Do either of you have a suggestion that would help me to decide? The speakers will stay stationary so the 5.1 looks tempting. On the other hand, I don't need more clutter on or near my desk.