The three tables at the top are interesting. For tiddly files (smaller than 128KB), the performance benefits on read access are modest, but these are the file sizes that are most common for Mac OS 7.6 Macs. Apart from the System file and Finder, how much in the System folder is bigger than 128KB? Does Mac OS 7.6 make a difference? -- block sizes would be smaller with HFS+. The 1MB file size performance improvements are pretty conclusive, however. If your data files are sound, video or graphics, CF will make your Mac snappier.

Without intending to sneer at a Duo 2300 (which I'd love to use), it isn't the model that will most benefit from CF in performance terms. I am tempted to put one into my PB 3400 (or rather, I'm happy to know that it is a realistic proposition when my hard disk dies).