I guess because the band is really one guy and whoever else he has to collaborate with, the albums are extremely varied. He's like a slightly more serious Doc Wor Mirran. There isn't a distinct personality, or any forceful thing that de Fabriek has to say... but for me, that's a good point. The albums tend to be light, loose, and surprising in some way.
That said, I like "Made in Germany" and "Compressie Slag", both on CD. There's a CD reissue of "Neveiland" on Plinkity Plonk that's enjoyable. Of the tapes, Mikko is right... older ones are better. None are bad, none are awesome, but I enjoy having them on.