Here are a few more to add to the list from Chengdu

New Times International

Sunny's English
More of a recruiter

North American ESL
They pull the bait and switch.

I cannot believe that Meten/Metro was left off the list
Meten Chengdu (probably all branches)

Sichuan Normal (Not always bad, but a record of screwing up visas)

Sichuan University ILTC Intensive Language Training Center (It is on the campus, but really just a crappy training center with really crappy pay!)

Word of caution
Sichuan Minorities University -- They have had a difficult time keeping teachers, and the foreign affairs officer can be a bit of tyrant.

Modern English -- Even for crappy training centers this place is pretty low.

Morning Star Glory -- Search the site for more info.