The Japanese Iwaki's are great pumps, loud, yes but super reliable. I have an iwaki 55 that I've had running almost every day for 7 years and it's still going strong!
I have another Iwaki 100 that is on my skimmer that has worked for almost two years straight only being cleaned once. They are hard to beat for pressure rated pumps. But they are not the most quiet. That's for sure.