Here are three good options and what they're going for from buddiesproshop.com:
Hammer Raw Hammer Jacked $108.95
Hammer Onyx Vibe $87.50
Visionary Ogre Particle $112.50
They all offer something a bit different. For the best all around ball, I'd go with the Onyx. If you take the surface down, it can cover some pretty heavy oil. Then, you would also have the option of smoothing it back out and/or applying polish to cover mediums. I have two Onyx, and they're both great.
The Ogre Particle is probably the best traditional oiler of the group. The ball reads the lane immediately and just digs in. It's not going to cover a ton of boards or big backend, but it will grip the lane and allow you to square up on the soup.
For me, I think the Jacked is probably your best bet. It gives a very firm read of the lane, but it still saves some energy for the backend. Numbers-wise, BTM rated it very close to the Storm Invasion in regard to hook, backend, etc. If you're looking for one of the modern oilers - meaning, a ball that digs in but doesn't roll out at your toes - this is incredible bang for your buck.
--------------------
Bowling bad since 1979 with no end in sight
http://members.bowl.com/SearchUSBC/ViewMember.aspx?prefix=519&suffix=9130