I bought the US Solar 3GPM pump with stainless fittings almost a year ago for $75 from Amazon. (Actually paid less than half that because of reward points.) I've brewed almost 30 batches with it and am very happy with how it performs. I liked it so much that I was thinking that I should have a backup, but saw the
eBay version for $24 and gave it a chance. Have to say, other than not having the stainless fittings it's damn near the same pump. Performance wise, it may get a nod over the US Solar.
On a few occasions I sucked too much grain through the pump when starting to recirculate the mash and clogged the US Solar. So far no issues with the clone. It appears to pump a little stronger, but I havent done anything to test it. And as for the stainless fittings, theyre just adapters threaded onto the same type of plastic body and really dont offer any significant advantage.
I outfitted both with the same CPC disconnects, in-line switches and female plugs, so they are interchangeable. These pumps have made my brewdays a lot easier. No more lifting heavy wort filled containers.