This one looks much simpler and cheaper than sweat fitting a bunch of copper piping.
I was thinking about copper before. When I had a few fittings in my hand and was looking at the price I though WTF. Especially when the PVC/CPVC display was right next to it and looked so much cheaper. I was even planning to make a fitting that screws onto the pump (w/o the male QC that I ended up using) but the threads didn't end up fitting so I settled on the much cheaper option with the male QC.
Make sure the pump is not too tall and the pump fits into the bucket while being able to shoot water up the center. I quess you could add two ellbows if the latter becomes a problem.