Clam,
I have a mag 7 in my sump and have had no problems at all i had a short power surge in my house one day and it restarted no prob and if i turn turn the power strip off to do any crazy maintence on the tank it turns right back on when i throw switch, i have read that u should replace the housing screws with plastic ones since the teflon coated ones rust which would be a good idea i noticed this on my pump also last night and will be making the switch to nylon screws