Go RE-92s.
The rear bar help A LOT on my car. It's much more neutral now, and at full rear bar it can even be a little loose if you get off the gas to quick. For example... 1st lap on a pretty quick course out in Sacramento... Big slalom early on. I went in a little hot, and tried to just steer therough it. I realized I was hot and jumped off the gas... WHEEEE! Went right around in a screeee of Bridgestone dust. Austin was in the passenger seat laughing at me for the rest of the lap... punk!
Good times.