I have a set of 555cc injectors from Deatschwerks. I have read of at least 3 others on this forum using them as well.
Mine have been running for about 2 months and haven't had a problem. The car hasn't been tuned for the new turbo or injectors yet, I just made the appropriate corrections in the PowerFC. I haven't seen them go over 70% duty cycle yet, so they will definately flow enough for my power target.
They re-use factory injectors and replace the main components (buckets and pintle caps I think). The price also includes new o-rings, and you get a pretty flow report with specs for each injector
Having said that, after reading that thread a couple of weeks ago on shaving injectors, I wouldn't be suprised if that is all it really is, just a high tech version of.