I'm going to get the Rio 2500 instead of a Mag7. Not only does it get better flow rate for the same amount of watts, but its also $15 cheaper
I hope I post this in time. You don't want a RIO as your main pump! To put is as tactfully as I can - RIO pumps suck. You get what you pay for with these. There's a reason they're cheaper. They are noisy, fail to restart after a power out, retain air (cavitate). The Mag7 is a quality unit. Very high output and quiet. It can be used external or submerged.
If you really want a RIO, use it for water circulation only. That way when it quits it won'thurt anything. And when it doesn't want to restart after cleaning, you aren't depending on it.