Anyone have any experience with using the Buddha in an A3000?
I've used it in an Amiga 3000 before. It works quite well actually, and is shocking simple to setup:-) You can even boot off the Buddha.
Is the performance as good if not better that the A3000's SCSI?
That would depend on the drive largely. The performance seemed to be on level with the built in SCSI, but I honestly never ran benchmarks. The nice thing is you can use absurbly large HD sizes cheap, where SCSI would be expensive.
What IDE specification does the Buddha compare to in the PC world? Is it considered UDMA?
No way to UDMA, the Buddha does not DMA. I'd guess it probably is comparable to PIO-3 or PIO-4. Even the newest UDMA drives are backwards compatible though, so they will work.