Phoenix blows away the Rejuvenator, but then again - it was roughly half the cost (there were two models actually). I currently only know 1 Rejuvenator user that has had 3 different Rejuvenators that were all bad due to battery leakage. Not the fault of the board per se, although they could have used lithium coin batteries instead. But, with the Rejuvenator, you use your original A1000 mobo... just the daughterboard gets replaced. That poses several problems right there. Mostly notably, the connection from the main CPU to the Rejuvenator. Ground problems and all that.
Red had one for sale that he couldn't get working right. I'm sure it was a combo of things, and come to think of it, wouldn't be surprised if this guy I know ended up with it. He lives in WA state if you're reading this Red...