You're best bet, imho is a GVP 28/24 Spectrum card. It's ZII/III so if you upgrade to a 3000/4000 you can migrate with the card. And it seems more tolerant of SuperBuster 7s found in a lot of 3000s than other ZIII cards. It has a built in monitor pass thru to pass the signal from a real A2000 flicker fixer like a Microway AGA2000 or Commodore A2320 card. The Spectrum is a 2MB card using the Cirrus Logic 5428 chip which is just a step down from a Picasso IV (5446 chip, iirc). The Speccie uses only 2MB of your precious fast ram which is better than the 4MB the PIV and CV3D will gobble up. That is, unless you have a rare accelerator board with more than 16mb 32-bit fast ram on board like a Cyberstorm2060 or a GVP Combo 040 w/ 4 of the very rare 16MB GVP 64-pin simms. The Spectrum has about the same specification as a Picasso II, but I like it better because it has mostly surface mount technology and unless you can find the rarer Picasso II+ board, the memory access is equivalent if not better, afaik. The Picasso II/II+ series is also ZII only. I think there were a lot more Spectrums produced out there as well, if you live in the North American market, GVP being a US outfit. There was/is even a re-production run of Spectrums by GVP-m, the successor to GVP. I think the going rate for one is probably US$70-90 on eBay lately. Picasso IIs seem to go for much more ($120+), though I don't know quite why.