RE: carbon arrows
There are lots of arrow makers and each making several grades of carbons. You want netry level ones you pay less and get some that aren't that great. You want better then you pay more and get better quality, and so on.
There are different size carbons for some special applications, such as large diameter one for target shooting. Then there are the standard diameter (most bign about 19/64") down the the skinnier ones like the Easton Axis which are usually used for hunting, 3D and target.
I've used a lot of them over the years and know that you get what you pay for. Just how much quality you need is for you to determine. Some makers do a better job than some others, and I won't do any bashing here. Let's just say that for the most part I shoot shafts like ACC's, Gold Tip Pro 22 Series, and Vapor 23 Speeds.