Hammer really needs to revamp their marketing efforts...there are regular, 200+ average bowlers at my local center who have recently made comments such as "I wish Hammer was still in business!" Comments like that should be a real eye-opener for Hammer.
Storm and Roto Grip are the major sellers around here (my whole family bowls, and we all have some sort of Storm or Roto Grip equipment). Although I have been branching out to try other things, and my current go-to ball is the Radical Torrid.
I would love to try a current model Hammer ball, however the pricing is definitely at the premium side of the market. Whether it be a Taboo or First Blood, they are almost prohibitively expensive. If they could bring prices down 15-20% and advertise it, they may see a bump in sales.