FedEx is not cheaper than USPS, FedEx GROUND is cheaper to SOME destinations and with certain sized items. For shipping, for example a 5 pound 20 by 20 by 20 box across the country NY->LA/PDX/SEA etc, USPS Priority Mail is cheaper than any FedEx service and Standard post is even less
Dana and Todd,
For something that large UPS and FedEx aren't too far apart. USPS is out of the running as they won't take something that big.
I've used USPS almost exclusively the past 12 years and in all that time they have only lost one package (stolen in Italy) and damaged one. This after more than 10,000 package. No dim weighting on Express, no fuel surcharges, no billing mistakes, no surprises. But you have to learn to do things their way.
Before that I used UPS (one claim for damage a MONTH), Airborne (some billing problems), and FedEx (started off superb and ended up a nightmare