Anthony/zx-c64 has done amazing work. I've purchased a number of his cards and hope he continues to develop new cards. I am a bit concerned that he might be stopping due to his website https://www.zxc64.com being offline.
He helped me with a number of questions and issues I had. Even replaced one of my cards after over a year it failed to work.
So far I have purchased:
Mini-Me - Voodoo 4 PCI
The first one I think had 32mb it died and was replaced with a 64mb version.
The 32mb just came in a plain box but the later 64mb version came in complete box w/manual. I ended up purchasing another so I have two.
This is one of my well used cards, I have in my compaq P3.
I did a couple of videos of the 32mb version:
https://www.youtube.com/watch?v=juW-NOpPVvI
https://www.youtube.com/watch?v=pVgWSTF9G4A
Lost Joker 2
This is a completly crazy card. It includes a Voodoo 3 and PowerVR PCX2 on the same PCB.
Super interesting and unique card.
Videos
https://www.youtube.com/watch?v=pVgWSTF9G4A
https://www.youtube.com/watch?v=PK4-7Gh5SFU
Special Unified Xcelerator (SUX) 6000
The clone Voodoo 5 6000! Never thought I would own a Voodoo 5 6000, this is almost as good (and in some ways better) than the 3dfx one.
So happy to have this. Lots of quirks and lots of fun to play with. Very expensive (although not because Anthony is over charging).
Videos
https://www.youtube.com/watch?v=UgbVmYn1xZ8
https://www.youtube.com/watch?v=IRSDQ5EyfcE
https://www.youtube.com/watch?v=9W6nCoLbq1k
Neon 250
A PowerVR Neon 250! Again never thought I'd own one. Super cool because maybe rarer than the Voodoo 5 6000.
I haven't had enough time to play with this card.
Videos
https://www.youtube.com/watch?v=eHnRc795Z7I
https://www.youtube.com/watch?v=P9X-1v_CyxU
https://www.youtube.com/watch?v=bVzzcm439_I
3dfx Voodoo 5 Changeling
This is basically a remaster of the Voodoo 5 5500. Has AGP 1.5volt support, 128mb ram and HDMI.
I've purchased this with the plan to make it one of my primary/well used cards. Although haven't had time recently to build a machine for it.
Video: https://www.youtube.com/watch?v=QtqNzp_2efM