Tested my high current psu couple of days ago... 2 explosed devices (small capacitor, fuse) and one small fire (another small cap), it works...
Only problem is damn thing weighs a ton, I have a 300W torroidal transformer (for dual 120Ws which I'm not longer getting, *sigh*) and it's about 6 pounds, too heavy.
Think I'll be getting a 220W TEC and a prebuilt switching supply, should be able to get one weighing around 1 pound for 25A.