How to ship speakers


Other than carefully packaging, what's the best way to ship speakers across country considering carrier, insurance, etc. any good recommendations?
tensnet
I shipped my Thiel 3.6's in their original packaging and the buyer used Fed-Ex and they arrived safely. Worked great bc they came and picked them up at my doorstep.
How big are they? Always double box, and if they're bigger speakers [100 lbs each], I would use a freight company, and make sure that they STRAP BOTH SPEAKERS NEXT TO EACH OTHER ON A PALLET.