Thanks for all the responses. I also hate fan noise. That and more readily available parts make the 7904 preferable. However, I'll also look into the 7854.
As I have a Tek 11801 and HP 16702B and 16500A LAs and 8560A and 8566B SAs I'd probably use those instead anyway. I'm one of those "Tek for scopes and HP for everything else" guys.
Have Fun!
Reg
