I'm using Biffle also. I don't know how your league choses drafting order but if you all get a chance at #1, etc. at some point in the series, you are doing well if your driver finishes higher than the round you picked him/her in. That means you did OK with Newman as he finished 20th and you picked 24th. What order of pick did you have this week?
I knew I was in bad shape when KuBu wrecked on the 1st corner in the first lap. Worse though is that someone in one of my leagues picked Kurt, Jimmie, and Danica, all of whom wrecked in the first lap. Thank goodness for a long season. I am at the 61st percentile which after the crap shoot that is Daytona, is fine with me.
I'm running Johnson (A), Biffle and Kahne (B), and Labonte (C). It differs from the average Yahoo! fantasy player but I feel good about it.
Here's a link to a great forum
http://www.fantasynascarpreview.com/forum/index.php PJ and KWise finished in the top 100 of the Yahoo! league of about 400,000 people. Ignore what anyone else says and you'll do well. Both see Biffle as a possible winner although both favor Johnson.