Grover Huffman IC's and SC's

I am looking for feedback from those of you that have used Grover Huffman's speaker cables and any comparisons (strengths/weaknesses) to other more widely known speaker cables.  Especially interested in anyone that has used them with low power tube amps (300B) and high efficiency speakers.

Thanks in advance. 

I've used his interconnects for years now in my reference system.  Absolutely love them.  Never tried his speaker cables...