I memorized wordsmart I,II and the GRE one. They were pretty good and pretty extensive, but I think direct hit volumes are better. I know most of the words in DH after memorizing those from wordsmart.
The ones I memorized were the main ones in the book. Hit parade is the small section at the end right? I didn't really bother looking at that because they only give u the definition of a word, without using it in a sentence or two, so I find that difficult to consume.