True. Alfa Romeo had a few hemi head engines as well back in the day. They do a good job of efficiently squeezing horsepower from a given displacement.
Amazon.com: Best Of Night Of The Proms Vol. 1 : Simple Minds, Joe Cocker, Chrissie Hynde, Bryan Ferry, UB40, David Garett, Toto, Meat Loaf, Status Quo, John Miles, Roger Hodgson, Howard Jones, -: Movies & TV
good luck with your search.
In no way were they underrated. At least among musicians. Close to the Edge, btw, is often the top and always in the top 5 of best prog lp's of all time.