Can't beat the price; it and a 20 oz tank cost me ~$45. Shot w/it extensively for the first time this last weekend and seemed to perform well. Noticed little or any shootdown.
Weaknesses:
Isn't double guaged to measure tank and outlet pressure. Not a biggie overall but wure would be nice to know when it's time to fill tank.
Conclusion:
So far highly recommended based on performance and price. Hope it stands up over time.