As for the status of the tkcROM, I've posted a notice on that:
https://www.oesf.org/forums/inde...?showtopic=5919As for the the Cacko ROMs..
Like I said, I'm not sure if you can compare the two, they are very different. You could say that Qtopia ROMs are more geared to using the Zaurus as a PDA with PIM tools, syncing and wot not. pdaXrom is more like a desktop Linux and uses standard apps designed for the desktop - but is naturally slower, some PIM stuff, no syncing and makes the Z like a tiny laptop. If you need a "PDA" then stick to Qtopia based ROMs, if you want to use it as a tiny laptop, go for pdaXrom, but you will probably need more Linux knowledge for pdaXrom than you would for the Qtopia ROMs.
I assume you've been using Qtopia with the standard ROM or tkcROM, the Cacko QT ROM is the same thing, however, unlike tkcROM it IS being actively developed. The hotfixes correct any bugs discovered, but the last one Hotfix B also adds a really nice swapfile manager which allows you to add more memory when needed, the look and feel is probably not as pretty as the tkcROM, but that may change with the next release, who knows ;-)
I hope this is of more help, feel free to keep asking though ;-)
-F