7-20-4 No idea. Never had one, so no comment.

The only Nat Shermans I have had are the Metropolitan Maduros, which are decent at cbid pricing, and the .5 Cigarillos, which are fairly good for what they are.

I think the biggest problem for both is they fall into the price range that so many others fall in, including a lot of the more popular smokes on here. As such, you only see them mentioned occasionally.