I'm looking for a solid desktop (either pizza-box or mini-tower)
computer case that has an all-metal exterior for shielding RFI. This
is for use around radios etc. I realize that SVGA monitors, mice, and
keyboard leak too, but right now I'm looking mainly at the PC box.

Most of the cheaper cases come pretty close to good shielding, but they
have these plastic filler panels in the drive bays that offer no
shielding and let a lot of RF leak out.

Most of the fancier cases in the computer stores around here have
humongous plastic pieces on the side. I'm looking for all-metal.

Rack-mount server cases seem to be pretty good in terms of metal
shielding all around but I need something for desktop use.

Any suggestions? If all else fails I can just put some perforated
metal over the holes in a cheap case, but I'd rather just buy a good
case to begin with.

Tim.