90-100's in Dallas/Fort Worth. The little bit the fan on the condenser pulls and pushes past the radiator does great. I've moved to a custom built fan setup that I made out of a ford taurus dual fan setup. I even wired up the fans to use the dual speed motors if needed.
One VERY important thing I left out. When wiring up a fan, DO NOT DIRECT WIRE ANYTHING. USE A RELAY!!! 30amp Bosch style relays are cheap. DO NOT SKIP THIS!!