Very cool set! That is something that will surely end up with a serious tape collector.
IMHO, The 1982 TDK cassette line up was the best looking of all TDKs. And with the exception of the D, they all sound pretty much outstanding.
I have examples of every single one of those here with my own recordings on them and I love them all. Aside of the MA-R's that I got from ebay a couple years ago, most of my '82 TDKs came from thrift stores for dimes and quarters. I recorded over what was on them using good tape decks and they sound rich and detailed. I listen to them all the time.
30 years ago, who would have ever thought that cassettes and their lineage would be scrutinized and appreciated by collectors and tapeheads, much like wine and cigars?