As far as comparing them to other loaders I honestly can't do that. However I do run a White Lightning loader and over a rock grate I did pick up about 5mph as well as a tremendous amount of pull in the midrange. It will load your pump harder so you may lose a couple hundred RPM, but IMHO they're well worth it.
With a 500hp 454, American Turbine AB impeller, Agressor droop and White Lightning top loader, in an 18' Tahiti style boat my top speed was 79mph @ 5400RPM with no shoe or ride plate.
Is yours an Open or Does it have a blocker in it? I came up on one that is a Half Blocker. The boat picked up about 4 MPH. It does cavitate a little bit out of the hole though.
