My advice would be to shoot the bow the way you are going to shoot all the time. Don't shoot it all year and then throw string silencers in right before season. Adding string silencers changes the dynamics of you bow. Very often adding something like that will require you to re-tune your bow to some degree.

Besides string silencers are good for your bow and string. It helps dampen the vibrations that wear things out. All my bows have them, even target bows. I actually think my bows are bit more accurate with them.

In my opinion just stick with the cat whiskers, they work well for the money. I prefer the yarn puff balls myself. They just get better the longer you use them. I've had one pair for going on six years now. I think they cost like a buck or two. I went thru two sets of string leaches in like 3 months when they first came out. And I don't think they are that quiet. All the ruber ones make a whipping noise you can hear when you shoot. The yarn puff balls and beaver balls don't make that noise. At least not that I can hear. Of course they are pain in the rain and thickets though.

Paul