To be honest, no. They don't compare, although they do say they're rated for high gallon tanks. If you want reliability, go with Aqua C. CPR is good for a smaller tank. I had mine and sold it. Unit before was WAY too finicky... had to be adjusted 3 times a day, wouldn't skim that much at all... was a big hassle. Amiracle makes good wet/dry units & overflow boxes... but I would stay away from their skimmers. If you can find one at an AWESOME price like $10... then it's at least worth a shot
Do yourself a favor and save up some money for a good skimmer... just my opinion, but then again, I choose my reasons to go into debt.