I have to admit to being puzzled by people thinking of buying an Iyonix now. I don't regret buying mine, which is still in daily use, but if it packed in today I would not replace it with another Iyonix. PCs and Macs have improved greatly over the last five years: the Iyonix is still the same computer (albeit in a different box). Running VRPC on my iMac is a very enjoyable way of using RISC OS. I think VRPC on a Mac mini would be both cheaper and faster than an Iyonix.
I will be very sad if RISC OS becomes an emulation-only operating system, but I'm not going to pay over the odds for a slow computer just to prop it up.