Is there any Zorro-II/-III cards that you have that you wouldn't live without?, ie very useful, must have etc? 
Deneb: gives you very fast USB2.0, DMA, flashram and allows you to connect sound card, network cards, HDs (and the HDs work way faster than using any other ZorroII card)
RTG:*PicassoIV or CV64+Indivision. PCI bridges are nice but don't switch the display automatically (well, there are some DIY solutions although these are IMHO*slightly expensive)
Network card: use a Deneb
Sound card: never cared about it much... use a Deneb. Or a Delphina, but a Deneb+usb soundcard is ok for me (although doesn't offer cpu-free mp3 decoding like delphina).
HD*controller:*use Deneb with a USB-HD adapter (SATA*or IDE, doesn't matter).
PS:*I have Prometheus, Mediator4000 and Mediator4000T and I have used G-Rex 4000. I prefer Deneb+RTG Zorro card (well, I admit GRex is sweet although if your CSPPC breaks you'll want to slit your wrists).
