I know that Keller came in pretty hot, but... the DX Teebird is fantastic.
If you haven't messed with a DX Teebird, it will probably give you very similar distance with a straighter finish. I really like them around 166-167g's.
The Champ Teebird I have isn't anywhere close to a straight disc for me, it's quite overstable. How beat do I have to get a DX before it flies like you say? How long will it stay that way before it becomes more on the flippy side? How well will it stand up to being thrown full power into first available? Just trying to know what to expect. I've yet to truly beat in a disc, and definitely not a base plastic fairway driver.
I mentioned I don't really like the feel of base plastics for anything other than putters, for whatever reason. And I really haven't gotten along with any of the Innova plastics, except maybe G-Star. I lost a GStar Leopard that I rather liked earlier this year.