My PhantomS is behaving okay, yes. Petr managed to build about 5 PhantomS for the Atariada Meeting, and he didn´t say that it´s unstable.
I am using it with the Nemesis Drivers now (until i get the Phantom Drivers for it) and the only problem i had was that my 14MB Memory made some graphic issues (green dots blinking on the screen) with the 25MHz Bus but Petr gave me another Memory Module (MacFalcon and me were sleeping at his home in Prague) from his stock and now it´s running fine. And games like Elite II or Crown Of Creation 3D just rock with the PhantomS!

Hope i could help,
Saviour