bruinruin,
The carbon arrows and short vanes do work very well in most modern bows today...but don't be afraid to experiment a bit to find the right arrow broadhead combination for your particular setup.
The heavier your arrow, the quieter and more efficient it will make your bow...given that your bow is properly tuned in the first place. And once you add fixed blade broadheads to the mix you may find that you'll have to retune your bow some to make the broadheads to fly properly. (the main reason why so many archers are going to mechanical broadheads...less tuning)
Twang at release could be a number of factors.
What is our bow ssetup and what arrows are you using?
