Maxi-Jet Powerheads are one of the most reputable brands of powerheads in the market, they are UL Approved and it’s a very reliable pump.
I had a NC12 original setup as a hospital tank with a maxijet 900, which gives you a flow rate of approx. 110 GPH, including the headloss. I had good results with this pump, and it worked out really well IMO. Also the Maxijet 900 is definitely more energy efficient and puts out less heat than the 1200.
Here are the specs for the Maxijet 900 and 1200
Maxijet 900
Wattage: 8.5W
Max Flow: 230gph
Dimensions: 3.5" L x 2" W x 3.25" H
Considering the headloss of one feet vertically, the maxijet 900 will give you a flow rate of approx. 110 GPH
Maxijet 1200
Wattage: 20W
Max Flow: 295gph
Dimensions: 3.5" L x 2" W x 3.25" H
Considering the headloss of one feet vertically, the maxijet 1200 will give you a flow rate of approx. 190 GPH