I use this reflection filter on a mic stand in combination with a condensor microphone, mostly for vocal takes.
Very good building quality, not flimsy at all like some reflection filters.
The difference in room noise with and without is impressive, but it is important you have absorption behind you as well to really make vocal takes dry as you would in a vocal booth. A must-have for those of us without a booth.
Definitely worth the price for the quality gain!
A took one star off as it came without a manual and installation is not intuitive. You need tools of your own. The manual on the internet isn't that great either, but here it is: >
Another con is that it can only be installed on straight mic stands. It would have been nice if you would be able to inclinate the thing, but then again, I guess that would penalize the robustness.
Conclusion: Despite the constraints and lack of manual, I would still recommend it 100% to those without the budget or room for a vocal booth.