I've been using them a couple of days now. At first they seemed a
little slower on reading, but SysSpeed reports no difference. There
has however been about a 15-20% drop in Open and DirScan operations
per second, at least on my system. This is using PFS3, in case that
makes any difference to these things.
Can't comment on CD-RW performance since my CD-RW is SCSI.
However, if you are trying to use an IDE CD-RW and having problems
the docs suggest using Executive to improve the multitasking of the
drives.
Personally I am not using it since I have a BlizzardPPC, and last time
I checked Executive advised against using it on PPC systems. If this
has changed, are anyone is using it reliably with PPC, please let me
know.