ive also got a danner mag-drive 3. the housing on mine leaked, but a 2 dollar tube of permatex water pump housing gasket fixed that up quick
the pumps not EMP shielded, so it will kinda cause your monitor to flicker if its too close. other than that its fine. runs very quiet (has a low-frequency hum to it) as long as theres no air in the system and the pump doesnt vibrate your case (i used some rubber gromets on the baseplate of the pump to isolate vibrations; it worked pretty good).