ORIGINAL: 98Redline
As for the QS's, I am not a big fan of them at all. They are heavy in comparison to feathers, blazers or predators and in my experience more susceptible to damage that yields in very erratic arrow flight.
Feathers undoubtedly lighter, weights as follows:
3- 4" feathers 9 grains
3- Blazers 18 grains
3- QS Speed Hunter ST's 20 grains
The New QS ST's are also very tough and durable. I'll still opt for feathers although both the Blazers and QS's will do the trick. If I lived in a rain forest I might change my mind, but until then I'll take advantage of the qualities of feathers.
Dan