Guardsmen 79, 80 just like Chuck said. I prefer 79 a bit more. The definitive version of TOS.
Bridgemen '78 just like Lancer Lady. Monster hornline that always seems to get lost in the mix.
VK 88, take a listen to those sops in Zorba.
27 in 81 had some the prettiest solo work I have ever heard.
...and for the really, truly obscure crowd...
See if you can find a recording of Arbella(all-girl) circa 79-80 playing Evergreen. not a tough arrangement but very nice sound.