Vampire600 V2 seems like a much better deal to me, feature-wise, and its even a bit cheaper.
But Vampire uses FPGA, and Lotharek board uses a real 68EC020 processor + FPU, so it might have a higher level of compatibility?
Or maybe some people would rather just have a "real" processor.
Also - does Vampire do '020+882 instructions? Isn't it just - basically - a very fast 68000?
On a side-note, I'm a little disappointed that the first we're hearing about this board is through an ebay auction. I vaguely recognize the guy's name but other than that had no idea he was this close to producing a working, for-sale, accelerator that you can buy today. Shouldn't something like that be a news item on this site?