Sacramento to Phoenix cant be more than 1 Zone away. 2 Days at most going FEDEX Ground. I am a former USPS employee and I have a FEDEX Business account. I have NEVER had to file a claim with FEDEX in all my years of doing business with them. THOUSANDS of Packages including Amps/Speakers etc. Recently sent a pair of Salk Soundscape 8 to Seattle from Pennsylvania (Huge Speakers). Not Strapped on a pallet and it cost me only $440 to send those 2 Huge 150 Pound boxes...made it there in 5 days without incident. FEDEX is always 1 Day Quicker than UPS Ground going across the country. I would NEVER send anything of value thru the Post Office cause I know better. Unlike UPS/FEDEX there are no repercussions at USPS. Short of murdering somebody on the premises you cant get fired no matter what you do. Packages are treated like garbage.
Just realized this thread is 4-5 years old...nevermind