Nicely made and no leaks for me but this resevoir is not made for a high end pump. Im using a D5 vari and it sounds like running water at 5-3 settings. You can not completely fill this resevoir so there is always a small area with air at the top and the pump will suck that air right down the tube if you have it turned up. I recommend the double 5 1/4 for high end pumps (havent tried one myself, went for just the T line). The Swiftech micro res sounds like it works nicely with the high end pumps as well.