To quote Richard Lee's website:

There is no loading system that will load more accurate ammunition than Lee Collet Dies. We guarantee it in writing with every set. No one but Lee has ever dared to make a guarantee like this "Smallest group size or your money back."

I am considering investing in three caliber sizes and wanted to hear your experience opinions.

Also, does the crimp die work well?

"Blessed are those who give without remembering and receive without forgetting"
-Elizabeth Bibesco-