Batman: TAS is the definitive Batman media, but the comics do occasionally match the show's quality.
As far as the Justice League & Teen Titans are concerned, there isn't a creator working on any of the JLA or Titans comics now that's fit to clean the gym socks of anyone that worked on either Justice League/Unlimited or Young Justice. I don't even think the writers or editors are from the same species. Or they've been into Morrison's LSD and forgot which how a keyboard works. Seriously, Geoff, Scott: quick pretending that you know what you're doing and just copy the cartoons. It's embarrassingly pathetic that the source material is so much worse than the licensed animation.
If I was Emperor of Warner Bros for a day, I'd hire Timm & Burnett to be the new Publishers of DC (with Karen Berger as President) and have Weisman take over as lead writer on both JLA and the Titans. Their days at Warner Animation are clearly numbered, with every DC cartoon now being cancelled. Move these people over to the comics and let them do what they have proven they can do for years now: tell great stories with DC characters. They clearly have a proven track record of being better at the job than the people doing the comics.