Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
With taps and dies, you get what you pay for. Go for known brands like Warrior, Presto, etc. They must be HSS, and slpit diesso you can 'fernurgle' a thread as required, Buy as you require or you will be paying for tools you don't use (trust me, I have tools people have never even heard of). Over the years my collection of t's & d's include metric course, up tp 25mm, many metric fine up to 26mm, bsf, bsp, whitworth, unc, unf, ba, and a full set of Venezuelan Beaver's Trap thread! (and many specials,some l/hand thread). Yup, a man can't live without taps and dies!