Thank you, my friend. I was thinking that the 550 was newer than the 500, due to the higher number. But, when I looked it up last night, I found exactly what you said to be true.

I know I will be better off saving my pennies until next month and buying either a logitech 2100, or the 401. I have heard good things about the new 2100. Of course, the 401 has been the standard for years. Do you think I will be ok with a 2100? I am leaning towards that, unless I can find a good deal on a used 401. Some say the 2100 is better, and it is cheaper by about $35. We'll see.

Happy flyin' Russ,
Matt