Darn missed the radio interview with Perry. Rusty Humphries sounded like he was impressed from what I heard later in his broadcast. He said that he was going to play it again tomorrow, did not say what time.
The broadcast repeats, but Perry was at the very end of the show, so you'd have to be up pretty late to hear it.
Basically, he said Newt is the only one with the conservative credentials and track record that he could support for the Presidency. He dissed Mittens and RP a bit, but generally kept his message a positive one for Newt. He said Santorum was good on the social issues, but otherwise not so much.