I was having a hard time locating real quality tools in Europe. I have bought 5 different Phillips #00 srewdrivers, which all where bigger than they were supposed to.
I repair iPhones on a daily basis, so having quality tools is an absolutely must. I do not regret buying those, in comparison, rather expensive tools, because the quality is simply outstanding.
I would recommend buying tools from ifixit anytime.
I haven't had any problems with the tools. They do the work perfectly.
Good tools go a long way :)