Pressure side cleaners?

[waterbear]

My builder installed a second pump when my pool was built for water features (deck jets, spillovers,and bubblers) that has it's own intake a bit below the water level and a return also a bit below water level (at the same height as the pool returns on the primary pump/fllter/heater/ swg lines). There is a 3 way jandy valve installed that will allow me to direct water to the water features or to the aux pool return to use with a pressure side cleaner. The pump is a 1 hp Pentair Pinnacle which is an uprated pump so it's equivalent to a 3/4 HP full rated (1 hp moter, 1.25 service factor). My builder seems to think the cleaner I need is the Polaris 360 which is designed to connect to the pool returns and does not need a booster pump but I think the 380 might be a better choice since I essentially have a 3/4 HP pump plumbed directly from the pool and back to the pool so there should be practically no back pressure. When the valve is turned to the cleaner position the water blasts out of the cleaner return. I think there might be too much pressure for the 360. I have not been able to fine any performace graphs for the booster pumps except for the pentair which is a 3/4 hp with a 1.5 service factor so it is slightly less powerful than the Pinnacle I have intsalled. Anyone out there that can help?

Also anyone have any experience with the Hayward Phantom. It looks pretty neat but I seem to remember there was some dissatifaction with it before the board crashed. I do remember the Zodiac Mars got some bad reviews and seem to self destruct after about 2 years.