I need a new strike ball.  I'm using a Hammer 3D blue as my main shot and a old school blue Hammer for my spares.  I'm keeping them both but I need to add a new ball.  I'm right handed and throw between 15-16 miles per hour.  I start at the second dot on the approach and throw mostly straight shots down the 8 board.  I'm just getting back to bowling after being out of it for 10 years, so I need a good new ball, but there are lots of balls out now a days.  What should I get?