Blueline, PanWorld, and Iwaki are all basically the same pumps. I think Iwaki may be a little more noisy (with American motors). I have a total of 7 Panworld pumps on my system ranging from the 30 to the 200. Up & running about 6 months now, and very pleased. Very reliable, and they run quiet IMO.

They do require service now & then, just like any pump, to remove built up calcium deposits, etc from the impellers & housing.

I think you will be pleased with these pumps, but you can't get the HUGE gph (3000+) you wanted from a single pump.