Running mp40 and love it , have never had to replace the wet side and at 50-70% I can't hear it
Have the wps at work and while they are a great price and move water they ain't no vortech lol hell trying to sync 2 together is impossible especislly on wave they fight each other would be nice if they were wireless and worked in sync.
Tunzes are great just wish they were smaller footprint
At the end of the day if pushing water is all you require there's alot more options then just these brands