what pump should i get?

[tanker newbie]

right now im currently makeing my sump(slowly but surely) now time for a return pump, its on a 20 gallon tank with a 10 gallon sump, i want to have about 100 gallons per hour maybe a little more, i needs to be fully submergable and it will have exctally 3 feet of head, orginally i was thinking of the rio1400, anyone else have any other recomdations

 

[sonny]

Mag-drive pumps are okay, and pretty cheap. I've heard of people having problems with Rio. Eheims are awesome, but a little pricey.
Sonny

 

[mithrax]

What's the rating of your overflow box, again?

 

[tanker newbie]

actually i dont know for sure, the guy at the store told me it can handel up to 600 gph, then i looked on the box(it dosent say), then i went online and i got 2 diffrent opnions, one said that it can handel up to 600, and the other 750,, but then i saw another web site and that one had the most 300 gph, as u can tell im confused, however all i know is i dont want a flood but i want the sump to work lol, im probly gonna wind up getting the rio1400 but i wanted to see what everyone else thought of it