I've used S&W 15% nitro 20% blend for several years now, as have all of the club Pattern folks and no one seems to have one complaint.

It all comes down to personal preference and, as someone already said, if it's bad, word will get out and no one will buy it.

Therefore, pick one that meets your needs, try it out. If you like it, use it. If you don't, switch to something else.

DS.