Agree and why am keeping my 1996 Big Block Suburban a looooong time(a few generations older than yours). Mine is GMT400 and yours is GMT800 platforms
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Have driven several 6.0L model Suburban's (including a 8.6K GVWR that is now discontinued) that has torque/HP curves as good as or better than my 7.4L...not the same and of course IMHO...
Am now finalizing decision on the 1980 Silverado dad gave me...keep my vehicles till either can't or won't fix them anymore. It is now on the don't want to side of things on this 38 year old truck... Now looking for a GMT400/GMT800 7.4L or 8.1L (newer design and torque are about 40-50 more both in torque and HP)
Dad never took care of it and his workers abused it, as dad just thought of it as the grocery/butcher shop truck.
Thanks for posting...helpful in piecing together stuff for my decision on both a replacement pickup and rebuild of my Sub (when that day comes...it still runs strong...just not as strong as it used to now at +168K HARD miles)