Excellent brake, well made, pretty stiff. Swapped the stack-caps for better ones and ditched the squeally pads, but overall the best U-brake I've owned.
Thing is unless you've got the rest of you brake system dialled in then these (like any other) won't make you brakes any better.
Overall, if you've got some Â£Â£ / $$ to throw away then buy this brake, but for 90% of the riders out there a brake that costs 1/2 as much matched to a dialled brake system (lever, cable, pads and chrome rim) will work just as well.
To Tunaaa - this happens when new for some reason, but mine have been on for approx 20 months and not come loose once since the initail 1/2 dozen times they would slacken off. 1 Star is a bit harsh !!