I have been satisfied with my Rowland comp. If yours is an older one, it's probably made of aluminum. I can't comment on whether or not they changed the design as I don't know. The one I purchased a few months ago is steel.
As for its effectiveness, factory 45acp 230 fmj just manage to dribble out and land at my feet. My 200gr LSWC at 1200 fps lands about 6 feet away. That was using the gen 4 factory recoil spring.
ES350 probably makes the best or certainly one of the best brakes available according to published reports of users on this site. I wasn't sure how serious I'd get with the 45 Super so I opted for the less expensive Rowland unit as a 'testing the water' option.
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My Rowland comp is definitely steel. Factory .45 ACP ammo does drop the brass very close to my feet, so I'm getting similar results to you. But it has way more muzzle flip than what I'm seeing in YouTube videos of folks firing insanely hot loads, with ES's brake. My gun is a Springfield XDm 4.5", so there's that difference as well relative to others. I will say that the package is reliable, if and only if you use the Rowland-brand magazine springs, and not the Wolf +10%. At least in my case (again-- XDm).
I've had great success with 800x powder and both the MBC 215s, and the Hunter Supply 275s. I've sort of settled on the coated MBC 215s, as they do hit pretty close to the point of aim, they're cheap, and readily available. Plus, with a normal charge, they work great in other .45s. Both bullets are superbly accurate, and cut clean holes in paper.
On very much a tangent, if folks are interested in heavy weight bullets in other calibers... there's a 230 gr. .358 bullet out there from Penn Bullet. Gives you .45 ACP momentum from a .357 revolver. You can get 800 fps and above, depending on the usual factors, which really does put the power factor right there with standard .45 ACP. However, my S&W doesn't have enough elevation adjustment in the rear sight to compensate for how high those bullets hit. They do put the smack down on bowling pins though, and might be the right big-critter load if forced to carry a .38 or .357 revolver for some reason.