Don't forget the 2009 has the Lifetime Engine, Drivetrain, and Transmission warranty.
I thought about waiting till the 2010 came out but since it is virtually the same truck as the 2009 model but without the Lifetime warranty.... it was a no brainer. Plus I haven't seen an option for the 2010 Sport model yet on the Dodge website. Not sure if they plan to discontine the Sport. That would be a bummer.
Oh, and might I add my dealer knocked off almost 10 grand off the price of a $42,000 Sport Crew Cab and is letting me buy any accessories I want at dealer cost. Just too good to pass up. I my opinion, if you can find a 2009 still on the lot with the options you want, I'd jump all over that truck as fast as I could.
So far I've bought the remote start kit for $188, the Dodge deluxe molded mud flaps at $35 a pair for front and rear, remote tailgate lock for $88, chrome fuel filler door for $95, chrome front air deflector for $85.