I'm sure patent infringement happened.
I've got one! I've had the WP40 since they came out. I ran it in my 120 for a few months.
I dunno...seems like a solid pump to me. It's quieter than my MP40. I don't exactly have a way to measure water flow but it seems to put out a ton of flow. Though, I will say...it's not putting out as much flow as some people have suggested. Some people talk about it causing a 3" wave across the top of their tank in a 180g. I call bull on that one. But my MP40 doesn't do that either. For the money, I will never buy another Vortech. I would buy another one of these in a hot second.
I've heard they can be loud if you having them facing straight out but that if you angle them a bit then they're super quiet.
I'm for it.