UPS for big stuff as they haven't ever given me any problems *knock on wood*
USPS for smaller stuff.....their newish $8.10 Flat Rate box is pretty awesome. Whatever will fit in it, regardless of weight, shipped Priority Service for $8.10. Adding Delivery Confirmation and insurance sufficient enough for most things you might ship in this size container will add less than $2 extra so you're getting Priority Service with DC and insurance for ten bux. Gotta love it //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif That's how the amp I just sold was sent to TX and the flat rate for the box with DC and $130 worth of insurance was less than $12.