Sony AV system remote RM-PP402: Learned all but System standby. Learned On/off from another Universal remote
Sony DVD remote RMT-D128A: Learned all buttons. Were also all preprogrammed.
Nakamichi CD remote CDC-200: Learned all buttons.
Toshiba RPTV remote CT-90037: Learned all buttons. Most were preprogrammed.
PVR-501 remote: Learned all commands
Panasonic VCR remote "program director" Learned most buttons including rolling wheel. Was not able to get 0, 2, & stop. Pasted these from the preprogrammed codes.
Also learned all the buttons of an old magnavox TV, and a Sanyo VCR.
Was also sucessful in turning off all the TV's in our mall with the preprogrammed codes. Range was much better than I expected from reading this forum.
As Vanderwielen said though, it would still be wise to keep you reciept. But then I would hope that you'd do that anyway. It is true that it takes some time to customize this remote, but that will be case with any remote with this much versatility.