I'll second both of those statements!Tracey tools are a good source of good quality taps and dies at fair prices.
And always buy HSS at least,
Cheap kits will pretty certainly be Carbon Steel rather than HSS. These will not necessarily be 'soft' but will lose their edge sooner depending upon the material that you are cutting. Used on Brass or Industrial plastics - or even to clean up existing threads - they should give reasonable service. I do have some Carbon Steel dies but only in the BA Thread series and use these to cut Brass rather than Steel.Fergie 307 said:...the ones in most cheap kits are too soft to cut or last well, and tend not to be very accurate either.