What are some good apps to root android? 2.2.2?

I recently updated my huawei ascend (from metro pcs with official update) android 2.1 update 1 to android 2.2.2 I used z4root to root it when it was android 2.1.but since the upgrade that won't work anymore I even tried the latest version 1.3 and also tried universal androot any good apps to root an android 2.2 (more specifically 2.2.2)