There were really only 7 ss divisions that I would consider elite: 1st, 2nd, 3rd, 5th, 9th, 10th and 12th. There were a few good infantry and mountain divisions as well, but many of the SS units later in the war were a rag tag collection of Cossacks, Croats, Belgians, Dutch, French and others with negligible combat value. (I am sure you know all of this)
I think these 7 pz units as well as some of the other elite German armored formations and independent ss panzer battalions and brigades are represented by the heavy tank piece - per the rules:
Heavy Armor
These units not only represent an even more refined use of armored tactics and combined mechanized arms, but also elite armored formations (such as SS Panzer and Guard armored formations) as well as the brute strength associated with Medium Panther or heavy Tiger and JSII tanks. The psychological impact as well as the firepower and armor advantage that these units had on the battlefield outclassed that of medium armor. Heavy armor, therefore, attacks and defends with a value of "4*". Because their vehicles such as Tiger tanks were not easily mass produced and their crews represented the elite cadres of tank crews, they cost 7 product points to build when they are available.