I have a 2005 Suburban, and I would one day like to get the CIPA Magna Extendable Full Replacement mirrors, with power adjustable glass and heat. These mirrors match the more rounded design lines of the 2000-2006 GMT800 full size Truck & SUV body style (Part Number 70700). Post edited to include part number.
However, my current OEM mirrors have so many more features in addition to heat and power adjusting glass, including power folding mirror body, reverse tilt curb view, auto electrochromic dimming at night (yes, the outside mirrors), built in turn signals, puddle lamps, and memory adjustment settings for 2 drivers. I've been having a hard time giving up all those features, which is why I continue to use the CIPA clamp ons instead.