@ Mizar
I've only seen them on eBay these days, I've bought two 4xEIDE boards on eBay over the past few weeks, they only speed up HD access slightly to about 250kb/sc but they make managing an HD and adding extra drives HD/CD/DVD a doddle...
The best board though is the FastATA MKIII, but again you'd have to find one on somewhere like eBay but the FastATA MKIII will take you're HD speeds up to around 500 to 600kb/sec (depending on your processor), I've only seen one in the past month on eBay but got outbid on it...
SmartFileSystem used to be on AmiNet as it was released into the public domain years ago by the author, however you can still find it here at the authors own website...
SmartFileSystem Ver 1.279OS4.0 on an A1200 requires a PPC accelerator but without an RTG board as well it's slower than a dead donkey...