Just installed a Cybervision64 in my A3000 and I am very, very happy with it.
My goal was a Zorro III card with pass thru and capable of 1024x768 16bit.
It does all that perfectly.
I had a Picasso II+ but I wasn't able to run at 1024x768 with a slow down and artifacts.
Also, if you have a 3000, the scan doubler is redundant, and most stated the CV64 was great all around with a pass thru and they were right.