Thats entirely vague and inaccurate. Only the MDD (and only 6% of them) had PSU issues. The Yikes, Sawtooth, Gigabit Eth, Digital Audio and Quicksilver all have very reliable logic boards and PSU's.
Failure rates on the Sawtooth were literally lower than 2%. Thats why I chose one to base my FrankenMac project on. I have even bought two functional spares for any possible part needs in the future. Pre-MDD towers can easily be found for well under 100. I have seen mint Sawtooth's on ebay for $55 US.
This is why I chose to get an MDD. they have a relatively low fail rate and are the most powerful of the G4's, im planning on getting a 1.42ghz model.