I just used my new Cobalt on Monday. I must say it is much stronger than I anticipated(still awesome). I am hoping someone can give me a comparison between the Bullet and the Cobalt. I am looking for something not as agressive for drier lanes.

I agree with the assessment of the Bullet. The ball is one of the best that I've ever had for very dry lanes. It has minimal flare and does not go crazy off the dry. It will still cover some boards, if you want it to, but it mostly wants to go straight. As the other user said, it is allergic to oil: skate city. If you want to add that to your arsenal with a Cobalt, which looks to be a skid-snap type of medium-oil reactive, you should be fine. I would recommend adding more aggressive equipment above those two, but you're certainly off to a good start.
--------------------
I can't bowl 300, but I can bench 345 : )
 I provide the muscle for the Fellowship of the Saws  

No comparison between the Cobalt and the Bullet. I threw the Cobalt last night on a medium-heavy league shot and the recovery was INCREDIBLE on the squeaky backends. I was playing a small swing shot crossing 12 at the arrows. The Bullet on this same shot would have had me standing far right and playing straight up the 5 board and keeping my speed down. The Bullet is much more limited in it's uses than the Cobalt. The Bullet is fantastic when the lanes go dry, but the Cobalt would be hard to keep on the right side of the lane when the conditions dry up enough for the Bullet to be at it's best.
--------------------
Jon (in Ohio)
CHROME WON'T GET YOU HOME!
F.O.S. Proud Saw user...see profile.