I found an interesting article from ShopSmart The quick & easy guide from ConsumerReport July 2014 from the mail on page 9:

Does the Harsh Light of CFLs Get on your Nerves?

Try EcoSmart 60 Watt Soft White 423-599.  Some early CFLs had harsh light, but most newer ones including this bulb didn't.  It cast a warm glow and saves about $6 a bulb per year in energy costs.

To me, this smells of harsh dirty ad...