Pump Seized. Replace or Consider Alternate?

I have a rio 26 hyper flow return pump that seized up on me. After much cleaning and adjusting, the impeller is just not turning.
So I ask this: 1) Replace the impeller for $40. 2) consider an alternate, possibly more reliable pump.

I have noticed with the pump not running there is at least a 4-5 degree difference in water temp.

 

I've heard of problems with Rio pumps.

For $40, I would just go for the new pump instead.

 

i would upgrade to a magdrive

 

Guh, nvm.

 

I guess ill add one more

3) do i need 1596 gph @ 1 ft head? what should be an good value gph for my 90 display and 30long sump

 

Er, what do you keep in the tank...?

 

You should only need something that produces 10 times the sump volume at about 4 foot head.

 

at the present time, i am only keeping a few fish and inverts. some hammer coral, and some candy canes. beginner stuff.