John1970,
I work in the shipping business. You have to package your stuff as if you would dare to drop it from a height of 4 feet off the ground on its corner. Will your package survive? We always allow 2" packaging around the item, 4 inches if it has glass in it. Do not use newpaper for padding. Are you sending speakers?
If so, get some 2" foam all around. All of the shippers are good. Bad things happen with all of them. Most of the time it is poor packaging that causes distruction. Also, a little known fact: if you use a used cardboard box and there is shipping damage, the claim may be easily dismissed by the carrier. Use new boxes made for shipping. You can get them at a local shipping store. Good Luck. DHL is usually the cheapest.
W