I was a bit skeptical about the quality because of the price, but it turned out fine. This power supply does the job well, has enough power to handle several standard pedals (tested with 3 daisy chained) and doesn't add any additional noise, unless I add the Line 6 Echo park delay. But I was aware of the problems with Tone Core pedals power, so I bought two NT 0910 and simply use the delay with a separate one. The pedal produces much less hiss this way, but there is still some audible noise - I guess I just have one of those early faulty ones.
The only minor cons I can mention is a rather thin cord, which looks not very trust-worthy, though there are no troubles with it so far.
If you're looking for a cheap power supply - NT 0910 is well worth the price!