My LaScalas are on their way out the door as we speak, having been
replaced by a homebuilt Klipsch horn klone pair which I have discussed
elsewhere.

PCs (and Macs and Sun SPARC boxes) are fine in their place. They are
not test equipment. They may be built into test equipment as in the
case of the HP Infiinium scope or the National Instruments line

( http://www.ni.com/pxi/ )

but if Arny were correct the above wouldn't exist.

The commodisumer PC is not a piece of test equipment. It is
unbenchworthy for many reasons.