Irwin Self-aligning dies and taps

[Dumber than lumber]

Does anyone have anything good or bad to say about the Irwin (Hanson?) self-aligning taps and dies? I don't have much experience with taps or dies, but am in the market for a mid-range kit. For infrequent home shop use.
thanks it advance for any help

 

[xin]

Reviews looked good, I would need Metric tho and don't see a Metric set available?